I do think Palmer's long sit on the sidelines is a wrong move. It's too much like his counterpart Hank Pym. You'd think DC would want to distance themselves from such a comparison. Hank has good reasons for staying in the wings. Ray has nothing to be ashamed of, and no reason to closet himself away from the rest of the world. Not after all this time.
I'd like to see him being active as the Atom, with Choi assisting, if only for the sake of science. I'd also like to see Choi help him out of superhero retirement. Ray has no support system since his ex lost her freaking mind. Choi and his family could be the start of a new one.