Scrypt needs much memory and a very good, fast way to send and retrieve data form and to it.
This is very expensive to achieve, so I think that the ROI for asic is very long. If for some reason
people start to use different protocol for alt-coins, those very expensive ASICs are worthless.
So GPU is the way to go, best would be to develop an energy-efficient GPU with Scrypt-mining in
thoughts. This would be the no.1 choice for everyone’s GPU. Just a hint for AMD/Ndivia
I bet AMD makes a ton of money just because of alt-coins.