He's dumb for not wanting the most corrupt person imaginable to become the most powerful person on Earth? Yeah…okay.

Dennis lives in Dee's apartment with Mac, last time they mentioned it.

Frank's funeral? While it would be depraved, I don't think that's a road they'd want to go down for a series finale. One of the best characters on the show dying isn't a way to go out imo.

Frank revving his chainsaw would be the perfect end to the series. Sunny's at its best when there are connections to earlier episodes.