We should definitely wait until ETH will switch to POS, after that, a lot of miners will have to choose another coin for mining. ETC is very solid choice by the way.
so why wait the ETH POS? let's support ETC from now on
ETC has a perspective future, even better than ETH for sure
ETC has always a future as long there is continuous code development. New features can always be added and problematic one removed. ETH and ETC can coexist and can have their own path to mass adoption.