Honestly, I really can't complain right at the moment. WotC has done a LOT for the casual player lately. We're getting lots of casual cards and the game is no longer combo oriented, it's who has the fattest creature now. And how many cards now affect ALL players? Sure, we're all going to have gripes, WE'RE PLAYERS!
If anyone can find any true things to complain about right now, they're looking REALLY hard IMO. Come on! They finally reprinted DUAL lands in the UNCOMMON slot! Other than changing the speed of cards and more player feedback in regards to card creation process, what else is there that's not really just a gripe? Of course, that is all my humble opinion because I'm mostly happy with the game. I'm just poor and that's my problem...

But I'm also really tired right now, so I probably can't come up with any really good issues that can't be addressed. But hey, I'll be happy to assist anyone that sends an article my way.
I think we can ask MaRo to open a channel, but I really don't think we're going to get a pat on the head and say "Good players. Here's some free cards." Our impact will have to simply be felt in future sets.
Spiderman: Never left, dude. Just too busy troubleshooting people's PC at my job instead of sitting on my duff doing nothing to reply to these threads... (What a concept, having to work for your pay!) Whenever an important subjects like this jump out at me, I'm gonna reply!