Are you sure you will profit from mining these coins?
Ethereum classic will not be able to accept that much hash rate either.
When ETH goes to POS, Ethash miners will switch to these small coins, therefore more holder -> price pump. That's the hypothetical situation after POS. Moreover, some of these coins already "anticipate" the switch, lots of conversation about the life post ETH 2.0. But yeah, if you only think about the current price, then it's not profitable.
I do not understand your thoughts. Why do you think if the hashrate of the coin will increase then the price will rise?
Usually it works the other way around, first the price of the coin rises and then its hashrate.
Miners will not mine non-profitable coins, most of them will choose those coins that are profitable now.