I think like one of the posts said above, doing some sh1t with doctor strange and the multiverse rules, bring back killmonger and have him take over the mantle as a good guy.
His character did redeem himself at the end of the first one after all
He didn’t “redeem” himself he simply died on his own terms.
Lets not forget this man burned the heart shaped herb supply
Killed a respected and important elder in cold blood
MURDERED a Dora Milaje right in front of her own band of sisters
Attempted to murder Shuri
And he did all of this within 24 hours of being crowned King
Who the hell is going to follow Kilmonger? He’d get no support from Shuri or Okoye or Nakia.
It doesn’t make any narrative sense whatsoever for Kilmonger to be Black Panther.