Or Bittrex for that matter.
Both of them have too much control over which coins live (in case of a random listing) or dies.
They should at the very least just have a warning that they want more volume from the coin so their communities could chip in.
Optimally, they should have clear rules and conditions to keep coins listed (average volume, wallet stability, node count, etc.) so there would be no surprises.
they do have a warning and a system for delisting coins.
on bittrex that i trade, there is a weekly average volume. i think it is something around 0.01BTC but i may be wrong. and they do give a warning for it. there is a clear text on top of the market that is in danger of being delisted. sometimes they come back with volume and sometimes they don't and are removed.
i have seen far too many empty promises like this and each time i am disappointed like the last.