Don't treat Blind Pick like Ranked. That's just foolish.
The point of maintaining 3 different modes is to have 3 different queues for 3 different types of play.
Ranked is of course the serious competitive mode with the competitive meta-game.
Normal Draft is for taking the match seriously, but without the overlying competitive meta-game.
Blind Pick is the carefree mode. The mode you play when you don't really care, or don't really feel like trying.
Yet I sometimes see people start yelling at each-other in the first 2 minutes as if it was the final match of a Ranked tournament with lives on the line. [zombie-brand-facepalm] If you're going to act like that, go to Ranked. Or if you really aren't up for Ranked, then at least go to Draft Pick.
Don't soil the spirit of the carefree mode with your presence. [slayer-jinx-unamused]
And really, you have to know you're going to have people who aren't really trying and don't care in your game if you go to Blinds, so if you do care, why would you want to queue Blinds anyway? [zombie-brand-mindblown]

or you want top lane