Ranked: always dodge if you have a bad feeling about your team
I've learned the hard way to stop trusting my teammates when I see weird picks or suspicious attitudes in the Champion Selection. I promise I try to be positive about it. I mean I play Taric jungle very well, I am quite open minded for non meta picks. But if your team is giving you a bad feeling, DODGE. Every time, EVERY TIME I decided to trust their judgement it went wrong. Or they were just trolls trying to ruin the day to other 4 people. Losing 2 LP is better than losing 20+.