Hey Adam,
I would love to see Mintcoin added. The exchange is great and so is the coin, so I think it is a good match. There is active presence from the developer and a large and rapidly growing community. I would love to see Canadians being able to purchase Mintcoins with Canadian dollars and not have to get Bitcoins first then buy Mintcoins. Mintcoins now are generating 20% 'interest' in the first year from Proof of Stake minting which I think is really cool.
I also like how the logos were redesigned. I feel the name has a nice marketing angle to it and it can draw in new customers. It has a nice gustatory component to it and it seems to have validity because of the Mint name. If you add it, I will add Vault of Satoshi to my own marketing campaign to help bring in tons of new customers.
I would like to repeat Cridon's sentiments. I believe that Mintcoin has long term potential and has "sticky" qualities about it. Being an energy efficient PoS coin like Peercoin but with a higher interest rate and shorter coin maturation rate, it is a very appealing coin to own.
With it being on the downtrend at the moment and having a low price point, I believe it has large upside potential.
It has only been out since January and has an active community with new services being added every day. The popular Dogecoin service provider Moolah_ recently added us to their platform and I see others doing the same in the future.
I would implore you to have a look yourself.