Rosanne won’t come back. If she did, it wouldn’t be the same. She robustly exercised her right to free speech. It wouldn’t be so robust now.
After mulling it over, I think you're right. Some f-ups are permanent. They could try to erase these past few months, pretend nothing happened, scrap the season and bring Roseanne back but it wouldn't be the same.
There's a lot of anger not only in how Roseanne was treated by ABC but also towards her co-stars, not a single one of whom had the integrity to stand up for her. At any time Goodman or Metcalf could have said, "this isn't going to work" and Roseanne would've been brought back but instead, clueless about their own fan base, they thought they could still have lightning in a bottle without the show's star.
Best thing for Roseanne Barr to do now would be to leave the Connor family in the past and find something new and original as a platform for her talents.