I think dodging a game especially in ranked match is really unfair and annoying at times. A while ago Riot changed the queue system in which dodging ranked match no longer lose elo.
I believe wasting people time is a big offense and should be punished accordingly. And the longer that person is being indecisive and let the clock tick, the more heavily that person should be punished.
for example, there is difference in situations where someone dodged a game who simply wanted to play a banned character, vs a person who waited till everyone picked and dodge near the end of the selection because he/she perdicts a negative outcome simply based on picks and ban. or someone who simply wanted to troll.
The queue system should remove 1 elo for the person who dodge after each character is picked.
EX: if 3 people picked champions. the person dodge, he loses 3 elo. but if he/she is being a jerk and wanted to bet on the outcome of people's pick. he should be punished for wasting people time. so if he dodge by the end of the seletion, he/she should lose 10 elo for 10 champions picked.
or replace 1elo for 10min queue block