•Will the value remain?
For example
I got a Klarity token and I got no gas so I will leave it there for a year or two.
•Any chances of value getting higher? Or it will die to years later?
Yes you can hold your altcoins on your wallet how long do you want, but not sure if the price of that will remain the same. Most of altcoins are volatile, the price will change from time to time, but the good thing is that if your altcoins will be changing the price from down to up. You will be amazed that your cents will turn into hundreds. Your money depends on the project or altcoins you are investing on. If it's good for long term investment then it's cool