Basically yeah. It wasn't trying to be the Avengers... at the time there were like 3 other Avengers teams anyways. With no FF it was sort of trying to fill that void.
I thought it was a well written book (like pretty much everything Ewing does honestly). But obviously it wasn't for everybody.
Adam would probably rank a lot lower than just D.
But to the topic....T'Challa would be pretty cool in a setting where Space/Cosmic heroes dwell. Maybe on a new Annihilation team or something. I feel that he would do better on a team carving out a setting that is not as familiar with heroes from different franchises coming together.
Having T'Challa on a team with Silver Surfer, Manifold, Nova, Gladiator and so on could be interesting.... if nothing else a change of pace. Only thing is he is somewhat shackled to Wakanda so probably wouldn't work long term. Unless Earth Wakanda moves to "space" Wakanda Empire.
Idea's Open Discussion And Growth. Silencing Idea's Confirms Them To Be True In The Minds Of Those Who Hold Them. The Attempt Of Eliminating Idea's Proves You To Be A Fool.
Blue Marvel. Teamates with T'Challa on the Ultimates.
https://en.wikipedia.org/wiki/Blue_Marvel