I'm not in favor. Sure, we all would rather play humans than bots... well, depending on the humans... but:
- Connections and the tracker being what they are these days, it's quite possible the player will rejoin if they're able.
- The old standard, which I remember from my mod training: Don't restart a full house! It sets a bad precedent, encouraging people to abandon bad starts since they won't be penalized. And that sucks for everyone.

Edited to bold the stance.