First: Is it possible to do a 'registered' PvP room? By this, I mean is it possible to have a (random) PvP room that only people who are registered on the forums/have a certain number of posts/have a certain score/requires some kind of test to gain access to? Segregation? Yes. Why? Because when I want to test a deck or get a feel for the current meta I don't want to wade through a legion of BKRs who just go into PvP2 with random cards to find someone who actually knows what he's doing.
Second: League banlists. The only reason I say league is because tournaments and war already have them. Why? Because not all of us are sadists/masochists who like playing stall decks, and not all of us have unlimited time for a 10 minute match, and if I see another Supernova I'm going to make the Uni-bomber look like a teddy bear. Also, it would clear the path for new decks/comboes that are extremely good for PvE environments but are considered too overpowered for PvP (mitosis weapons comes to mind).
Third: 'scoop phase' button. There's little reason to play a match that you know you've lost...except for the stupid ban system. So just let us forfeit and stop wasting our time.
TL;DR: I like my time and I like Elements, why can't they be friends?