He could always be in the same way he was in the original: as a costume!
I've said this before and I'll say it again: Jessica Jones isn't happening! She is the most vanilla of all marvel super strength female brawlers, and in the comics never gets involved in major combat or teams, although sometimes does intelligence gathering. The game has a heavy comic influence despite what people think and there are any number of other street level/mystic defenders that could take her place. Heck series vet Elektra is more likely and she's rarely a team player. I think Hellcat would be a fun choice, slash attacks and some mystic moves and it's provide a nice visual mixup. If you don't mind a male member and want something with more variety Black Knight would be a solid choice giving the team a tech based zoned with sword short range attacks
Jessica Jones was a supporting character in the Avengers and then an active member in the heroic age year, before Bendis wrapped up. She was in the Defenders for the last run. She was there for multiple events.