don't you think it is time to move to gpuwafflepool with registration and individual preference settings for upcoming smart algo-switching?
and to keep wafflepool scrypt-asic friendly without registration.
No need for user registration. Better to have people sign a generated message from their BTC address, I think. (e.g. how sites like SimpleVert take Merge-Mined addresses
http://www.simplevert.com/set_merge/VkbHY8ua2TjxdL7gY2uMfCz3TxMzMPgmRR/MON or allow fees to be increased
http://www.simplevert.com/set_donation/VkbHY8ua2TjxdL7gY2uMfCz3TxMzMPgmRR).
Hold-back (no auto-trade) coins could be implemented along with user-weighted algorithm preferences via this method, and still no user-signup for those that want easy quick-start mining.