Actually there are enough xzc pools: suprnova, f2pool, mintpond, bsod, omnious, zpool, and of course mph. It's just hashrate distribution that sucks, everyone mines on mph. I can't understand why. Suprnova has 0% fee, f2pool is PPS, mintpond  has great interface and statistics...
I guess people got used to mph.

F2pool might change this, it already has 70 GH/s vs MPH 98 GH/s....