In terms of where you wouldn't want to end up, Seneca seems pretty clear, since you're just there to suffer and die, and shit, you can do that on your own time.

You can achieve a kind of awful transcendence if you're Medea, but I bet you still have more fun if you just skip a couple of generations and go for The Revenger's Tragedy.

OTOH, I've always wanted to perform in a version of The Lion in Winter, one of those few plays in which there literally are no bad parts.

Anyone in particular you'd want to be?