suggestions to fix pvp
1) 30 second time limit on turns. games take too long, lots of jerks love taking a full turn to digest that one new card and purposefully wasting opponent time (maybe one minute for 1st turn, 30 sec for rest?)
2) separate ranking system for pvp. unfortunately, matchmaking systems only work well when every person has only ONE account and everyone plays often. this is certainly not the case. only thing going for this idea actually getting implemented is that its a giant time drain to get a variety of upped cards.
3) AI improvement. dumping T50 and making every deck we create a FG only swept the issues with AI under the rug. please please zanz, keep working on making an AI that can play 1:1 with us. people would feel more confident and learn more about pvp if AI was smarter. perhaps some tutorial scenarios to help new people? MTG has them in 2012, for an example
4) leaderboards! both arena and pvp need these. now theres not even the moshimedia to look at
5) bounty system
6) restricted cards / rotating banned cards. sorta like LoL, helps to keep the game fresh and one archetype from dominating