if i'm not mistaken tina fey originally planned to have that mr mayor show be a jack donaghy spin off and alec baldwin declined the idea, so even if we set aside the possibility of him going to jail it'd be a reboot without jack which (as much as i love the rest of the cast) would be pointless.

i do miss the show a lot though, i'm currently rewatching it and there really isn't anything like it.