So technically Cryptonite is working well, I assume. In this case, I'll try it out these days, I'm eager to see the "mini-blockchain" working ...
Exchange delistings are temporary problems, so if the coin's "basic concept/USP" is solid, that doesn't matter for me, "its time will come".
The other small altcoin I support, Slimcoin, is actually in a very similar situation (only trading on Novaexchange, but it's closing ...) and it's still alive and kickin'.
I'm not saying we didn't have any trouble thru our history, but we are still alive as you can see, after almost 4 years ;-)
The coin is still fast and its innovative concepts working as expected.
It is a coin worth keeping alive for its technology and for historical reasons, but I can tell you we had huge trading volume at times, so no reason it can't be used as a currency.
Not only a tech exercise, then :-)
We have plans for it...