She was, but Marvel should have done more with it. And I still believe that even if they are making her a mutant again, they won't use that often.
Like, it's a nice idea that they'd make her some kind of ambassador between the A and X side. But this is a character that they absolutely refused to give any decent character beat to that could have helped redeem her in the past 10 years since she's been back in comics (if you can call it that) since M-day. So they just haven't built up a lot of good faith in that regard.
If they do return her, have it be for her narrative. Don't just make her that and sit on it. And keep her an Avenger and have her in actual Avengers stuff. She was the second ever female Avenger. On the second team. She was the most consistent serving Avenger. It's her home, it's where her friends are. Everything that she's built in the past 56 years of being an Avenger.