Come on guys, it can be simpler...I'd suggest using Yacoin's dynamic block reward and go multi algo as suggested.

multi algo, with X11 asap, as a first phase...
Now we have the situation, when scrypt GPU miners are making a decision: what to do now.
I observe from forum comments, that for most of such decisions - the N-scrypt is unfortunately almost ineliglible in comparision to X11 (i.e. X.. family), due to operational costs and heat. The ratio is maybe less than 10:90...
Such multi algo, but with X11 as interim solution - is like a "back to game"...
And there is no time to waste, when fat scrypt ASICs - are just around the corner.
If not - the only hope is a sudden appearance of big chinese X.. FPGA farms - so, like in a roulette.
(and then - the situation may be reversed: X11 will forced to go multi algo with N-scrypt for example)
It's true. The vast majority of miners went to X (especially X11, because X13 and X15 as consume more electricity).That is why the failed massive adoption vertcoin by litecoin miners. When all litecoin miners pass on coins with X algorithm vertcoin is lapsed.