I hate how it shows YTD stats by default on the team page. The trade interface itself sucks (but the ability to 3 way and stuff is cool) but if you're over the limit it doesn't push you to drop someone like Yahoo does, or claiming guys off waivers you have to make sure you have room.
Features are cool, execution is clunky as f***. Yahoo is the opposite + a UI that doesn't make your eyes bleed.