Haven't read all of the posts here, so take my response with a grain of salt.
First off, definitely think that Hank should come back. Whether that's as an advisor or as an active hero, I'm open to either. Just to see him back.
Secondly, I don't hold his domestic abuse against him. Yes, he hit a woman. Yes, that is wrong.
And he has acknowledged it.
And he has even gone on to say that he shouldn't even be forgiven for it.
And he has done numerous things to make up for that act.
That is the difference.
That is the difference between Hank Pym and some lowlife domestic abuser who hasn't taken accountability nor responsibility.
So yeah, Hank Pym should come back into the Avengers, either as the advisor or active hero. Again, take my thoughts with a grain of salt.