I think replacing KGW with a better difficulty algorithm would go a long way toward fixing this, as would increasing the hashrate from non-multipools (which is a social problem, not a technological one). Meeh is currently working on the KGW replacement, so it will not be long before there's a fix and hard fork.

Since I'm the only developer that can work on Zerocoin right now (meaning without any learning time), it makes more sense for me to stay working on this so that there's no chance of schedule slippage.