Yeah, I'm gone until this gets up and running again. Last hour I'm showing half my hash rate on the stats feed, compared to what I push normally. If you can't handle the volume H20, stop accepting new accounts, kill off some smaller ones, whatever.
To be frank you want the highest hash rates as possible from the most people; I agree if possible load between systems need to be split up but the more people mining means better profitability overall (you can set up different groups of miners to mine different coins).
Of course, the payouts should be evened out but the possibilities are really good to get profitability above ~ 0.015 MH/s if that happened.