There is 0 reason muting/blocking someone should have me queue with them again in normals.

In ranked I get it, you don't want people manipulating the system for an advantage. Cool, that makes sense.

In what universe does it make sense for me to wind up with Timmy the toxic troll 3 matches in a row in normals?

IMO this is the single largest contributing factor to League's toxicity - there is no immediate repurcussion for bad behavior. In other games, if you're a prick you at least find it harder to group or get into games when enough people block you. Solves the problem itself.

Prevent requeueing with someone if blocked in normals pls Riot.