Great thoughts! Multipools truly will rape he most profitable coin and benefit specific coins the most.
This means 3 things:
1) don't invest in a coin that is profitable to mine because miners will rape it.
2) invest in a coin with a growing trend of multipool users
3) invest in a coin with very low daily inflation for a more rapid price rise.
So, under these rules, I would consider doge a bad investment before the block halving. It's getting raped by miners. Also, I consider black coin to capture points 2)&3). I think flutter is in second place for multipool growth so they fall under 2). For 3), quark and zeta could be great options too - both have very low inflation and the communities are working well.
That said...I need to take my own advice and act on this. Multipools will be a gradual price booster (outside of the black coin pump which made many lose), so I suggest you look for gradual growth (or even a drooping price) before you invest