I really hope they don't bring Genis back just to destroy his character yet again. I know I'm probably in the minority, but I honestly loved the character throughout David's run and then Genis' stint in Thunderbolts. By far my favorite Captain Marvel next to the original.
I liked Genis in PAD's run on his title (although I haven't read as much of it as I'd like to), but I feel like it's hard to judge him in the New Thunderbolts run. That whole series just felt like it was trying SO HARD to be as cool as the original. Genis definitely felt out of place among Alas, MACH-4, and Blizzard.
As far as favorite Captain Marvel? Monica, all day long.