Can we NOT play with people we've blocked, at least in normals?

^^ When you play with someone either insanely bad or insanely salty, it's a normal response to NEVER want to play with them again. I personally want this in both normal/ranked, but I suppose this could be marginally abused in higher elos. (make the cut-off plat 3) You may be saying, "There are 100 million active accounts, you'll never play with the same person 2 times or more." Well this is incredibly wrong on several levels, I've been keeping general tabs on certain players that were noteworthy after watching replays in lolreplay. After 2 months of doing this, I've played with 32 players at least 2 times, 10 of which I played with on 3-4 occasions. Heck, I've even been matched with and against 3 of my friends. (Keep in mind my friend list is quite sparce.) Again referencing riot's big announcement of 100 million accounts, this wouldn't hurt matchmaking in the slightest by any means. So I request this be added to the algorithm please. If need be limit it to plat in normals and gold in ranked. Thank you.