I spent most of my time doing research on many altcoins, their old price to the present value and i find out that even if you sell your tokens today leaving few tokens worth few dollars for many years can worth something. For example if you left 9$ worth of bitcoin in your wallet since 2012 you would never have imagine what it will become today, in jan 2017 you can buy 5000 pieces of Ripple at 0.007$ which costs 35$ and in jan 2018 a XRP cost 3$ which turns 15000$, there are many examples like this on CMC, remember Tron too? My point is its bad selling off all your coins, if you needed money that bad always leave coins and tokens worth of few dollars left in your wallet just in case
This is good advice, leaving $10 in wallet is not big value, just think of it to pay a fee. But do not expect the value of the remaining tokens in the next few years will rise high, because these tokens could become worthless.
This is if the altcoins you hold are not going to die. If it won't then probably leaving just about 2500TRX in your wallet could be worth 2500USD as well in the future. You know the DOGE doesn't have that kind of price before, I don't see it going up but since people keep trading it since it was accepted in a gambling site, a lot had been using DOGE. Now they are speculating DOGE to moon that mcaaffee is now also expecting its price to climb.
As long as your altcoins will have a market and satoshi price, it will have a value in BTC. But don't put all your hopes to it.