there isn't long term exist in cryptoland. most of them are just for making money, then dead.
I see your point but there is no such thing as a truly dead crypto. I have seen many resurrections come back from the "dead" for a 10 fold or even 100 fold profit.
Dead coins are great for accumulation and then a takeover and relaunch. We're gonna see a lot of that with the "old" coins this coming year. Load up on the legendary coins now.
Cheers!