I've been mining since September on hashco.ws. I think something is seriously wrong now.
I've been on Hashco.ws since they started but moved my rigs back to Middlecoin (previously I spread out amongst different pools to try out and compare) when they had noticeable jumps in profitability at the start of the Doge-craze. Then the hack happened and things haven't been the same since which is totally understandable.
It's a vicious cycle really. The hack necessitated a rewrite of the pool and that takes time, especially if you're not sure what security holes to plug. As time ticks on, people move their rigs to other pools, lowering the overall hashrate by a sizeable margin. Even with the good vibes from ATriz and Nearmiss' good handling of refunds, not enough people have jumped back onboard. The low hashrate means Hashco.ws can't mine certain more profitable coins resulting in lower relative payouts. Low payouts vs Middlecoin means more people won't jump back onboard... Shake, rinse, and repeat.
I love the concept of this pool, but it's going to need major changes to get back where it was before the hack.