I like the observations you made above, Battle. I would think that the average Wakandan would easily and fluently speak about 12 languages [remember their multi-thousand year tech lead upon the rest of the world, and their multi-thousand year nationwide practice of essentially benign eugenics so that there are ZERO Wakandans with illnesses, and ALL would qualify as at least low grade geniuses to every other country on Earth ]...including all of the primary languages of the Outworld invaders of Afrika from Europe and Asia, not to mention "exotic" languages like the Deviant Lemurrian language, Atlantean, and intergalactic languages like Kree and Skrull which Wakandans would be required to speak as the premier civilization above sea level on Earth, and the longest. most noteworthy defender of the planet.
T'Challa, Shuri, Hunter, D'Ciggs, and all The Royals speak every language on Earth and all of the native languages of Earth's most common alien visitors. Fluently. Remember how T'Challa wasn't thrown off by the Deviant Lemurian language under CJP's pen? Elimu na ufahamu wa nafsi na hisabati ya lugha...Knowledge and understanding of the soul and mathematics of language...is automatic and carefully ingrained in the people of Wakanda. It's traditional knowledge. Even The Jabari have it.
I've written this before and I'll write it again:
You are true Black Panther fan, yo!. 
YOU should be writing some portion of title someday. F'real!

I would loooove a shot at writing the main BP title, or something. I would first sit down and read every issue of every BP ever written, and find a way to allow ALL OF IT to coexist in some way. shape or form [ even the vomitous TurnCoates series ], and take off from there.
You know what? I would probably suggest that the ENTIRE TurnCoates parts excepting for T'Challa+Ororo happened actually to...drum roll...HAPPY PANTS PANTHER, whom T'Challa brought back even prior to Battleword via a jaunt to The Panther Pavilion and resurrected again post-Battleworld as he resurrected the entire 616 with The Reality Gem. The whole TurnCoates Star Wars rip-off? Alternate universe, the result of this universe encroaching upon ours, and Happy Pants was dispatched to resolve the problem. The whole Rape Camp garbage? Didn't happen in Wakanda proper, but instead in the areas that the Ghudazi from CJP Era occupied, the result of Wakanda's required expansion into and acquisition of territory from Mohannda, following the aggression by the country that its dictator the Gary Coleman lookalike led...was it Mohannda? Whatever it was. Either that country of the other country with the brutal dictator who beat a man with a club as the dictator and made the man repeat that the dictator's office hours were from 9 to 5.
The Dora Milaje and the NO ONE MAN arc would actually be easier to deal with. I'd re-emphasize what's already in canon...The Council of Wakanda. That in and of itself instantly removes even the rationale for the "NO ONE MAN" arc in TurnCoates' writing and instead substitutes something that I would use to justify the existence of the story in canon, and resolve same storyline in a single breath: the group of Dora Milaje who revolted targeted T'Challa because the DM knew that there were TWO T'Challas. The whole country knows there are TWO T'Challas...616 BP and HAPPY PANTS. The Dora Milaje would object to this in a fundamental way, because in their faithful service they are to serve ONE King. Not TWO. And TWO KINGS like T'Challa would DEFINITELY raise fears of too much power being focused into the Royal Family and especially into T'Challa, as two Kings of his accomplishments and unprecedented stature necessarily DOUBLES HIS POWER. Which threatens the traditional Afrikan ultrademocracy and the power of the Council of Wakanda, as well. No Western style government would be approved or acceptable to the DM as they have far too much knowledge of the even greater failings and even more bedrock corrupt governments of Europeans and all nonWakandans are.
I would state that Ramonda Malkia Mkubwa [ "The Great Queen" ] threatened execution of the Dora Milaje not in defense of the Rape Camp or Elders but because they defied her orders. Ramonda Malkia Mkubwa had every intention of executing these traitors to Wakanda, but as usual she was playing the long game with the intention of mercilessly wiping out to the last person the enemies behind the people offending Wakanda and Wakandans in the Rape Camp, as such a thing as a Rape Camp in any area that Wakanda holds sway is literally impossible...unless dark and fearsomely powerful magicks combined with extremely advanced tech is involved. The interruption of the Dora Milaje prevented her from finding the identity of and executing the perpetrator
in one swoop.
Turns out? This Rape Camp and its international exposure is part of a feint and maneuver that's part of the plans of a union of The Royal Family's enemies in a Blast from the Past: a vastly upgraded and vastly more dangerous Baron Macabre, Evil Kang the Conqueror, and...drum roll...the return of ACHEBE.
Ramonda would defeat this trio by herself. She's not especially worried about them, but instead she's worried about uncovering the power that's behind them. The power that's seeking to use Evil Kang and Evil Kang's tech to finally establish a beach head on 616 Earth that Wakanda has long denied them...and which they're seeking to prevent Wakanda from detecting this time by sowing discord in the previously unperturbable Wakandan nation interior politics. That heretorfore unnamed power? Would be the new Zombie Queen, the "daughter" of the original Zombie Queen and Zombie King of The Zombie Universe...home of the rampaging Zombie Virus.
It was the Zombie Queen who N'yami slew and whose terrors Queen N'yami [ T'Challa's birth mother ] sacrificed her life to destroy in order to protect T'Challa and the world [ the original Zombie Queen was trying to spiritually infect T'Challa as a fetus, and use fetal T'Challa as a means to literally be birthed into 616 Earth ]. And it was The Zombie King who T'Chaka killed in direct battle and whose vast galaxy of Zombies attempting to enter 616 MU that T'Chaka sacrificed much of himself to destroy. While still greatly weakened [ comparatively speaking ] T'Chaka...against the advice of S'yan the Swift...went to the fateful meeting recorded in RH's "WHO IS THE BLACK PANTHER" that resulted in his assassination [ thus squaring and making sense of the canon explaining how an assassin like Klaue who would normally have zero chance against even the Dora Milaje was able to assassinate the extremely vaunted and heretofore unkillable King T'Chaka ].
But now? Another power has tinkered with The Zombie Virus and made it incurable by Morbius' previous cure. And this threat? Would probably be the threat that I would have T'Challa face and resolve using all of his abilities and pull off the megagenius feats that would place him without question as the shrewdest man in the MU...a la vintage CJP. He would also pull off a high number of tech feats,a high number of speed, agility and acrobatic feats a la vintage Don McGregor, display deep magic knowledge and the return of the sigils on his flesh a la Maberry...and straight outsmart, drag and dog walk everyone a la vintage RH.
^^^this up here would probably be the first or second arc in a 12 issue arc that I would write for T'Challa.
Sorry for the "strikethrough". That's an accident and Idk how to remove it.