The biggest problem, the one that made me promise not to come back, was the lack of a manual withdraw option. I'm never going with a pool that lacks this again unless there's really no alternative.
I don't understand people saying there isn't any manual withdraw option... Don't set any number for automatic withdraw, then when you want to withdraw set the limit below whatever amount you have and then BOOM next block it "auto" sends your withdrawal. Sounds a lot like a manual option to me...