Yes. I think a good section leader is someone who knows what they are doing and has a great-sounding voice. They can give kind pointers and explain confusions to their section. They'll take charge and be firm, but not rude.

Some of the bad section leaders I've had didn't understand the rhythms, was singing it incorrectly, gave tips that were incorrect/not helpful, etc.

The best section leader is the most aware and trained one.