What if the dynamic queue preferred roles was percentage based?

Example:

I want to play Jungle 60% of the time, Top lane 30%, and Support 10%

Mid/Adc: 0%

Obviously make the system so you can only have one role up to a certain percent because everyone setting their roles to 100% mid 0% everything else would make finding queues impossible.

I'm not saying this would fix queue times I just think it would stop the complaints of people not getting the roles they want and also make support a desired role again.