ROI will considerably change over time. It maybe awesome (extreme high) at the moment, but might be terrible some days in the future (due to unbelievable high number of masternodes and low price of Protoncoin).
New coin will also have indefinite supply? it is said on the first page that POW is until block 100K but current explorer(http://shekelchain.com/) shows block 18478, what is new block/reward?
You should read more, learn more before posting. English broken, so I don't understand what you implied in your thread.
The price of Solaris stayed strongly above $1 for a long time. It's very promising coin. I will closely follow the project for long-term investment. Thanks dev for the amazing project.