I suggest moving your coins to bittrex since their exchange isn't full of problems and it has the best security of any exchange out there. It also has a much wider selection of coins, many with real promise that Polo doesn't currently list.
For me Aragon and Swarmcity are the best ones to hold for the long term.
Thank you! I've taken a look at Bittrex, it's seems I also have to purchase with either BTC/ETH. At this point, is it safe to assume I have to purchase all other alts with one of the two(BTC/ETH) I really wish I could purchase with USD!
I've heard good things about Aragon, but nothing on Swarmcity. I'll look into that one too.