To run them solo is not worth it, sell it ...... maybe as a door stop since summer is around the corner. They are great space heater in the winter,
I actually saved money this years heating my basement.
Now there is a lot of alt coin out there and I was successful whit Peercoin until it fork lately and not all the nodes updates, I tried Emercoin
and got a lot of orphan blocks, those coin are made for POS not POW.
Here is my ideas, pretty sure there is a genius out there that would take one of the coins that did not start of tank and make that coin
a slow ASIC POW coin, let say that you can't mine that coin whit more then 1.5 T or you get kick out the network or temporarily ban.
The coin reward would increase whit the difficulty not the other way like all the actual coin. By doing this people will bring back they old ASIC
to work and maybe create a new rush like Bitcoin did when it got popular.
The value of that coin should be low but high enough so people would like to mine it and enjoy making a block and the reward.
So I am trowing the ball out there, hope that somebody catch it and swing it back.
I'm not sure how you are suppose to control the 1.5T cap you gave as an example.
People can just "fake" they are a different person by spreading their hashrate.
It's a good idea if you find a way to avoid that.
That is an easy one.... there is what we call an IP address
There are SO many different way's to try to get around if IP address is used to separate different people. I mean VPN's, Proxy's, heck whole there is a whole industry working to do this. A good example is some places like China block this very site.... does it stop us from seeing people from China.... anwser is no they got around the blocks.
As long as there is profit to "game" the system, people will try to do it. IP is in no way the final anwser to protect something.