Yep, getting to be an old story and look at all the bad news out there for cryptopia.  They are terrible at managing wallets or any kind of technical changes required.  I've used Cryptopia and probably would again but it is a risk and lately seems like more of a risk or just as much as a risk as much smaller exchanges.  I would say Polis needs a top 20 (preferably top 10) to be considered with other leading coins.