Anyone has a screenshot of Yunbi? It's currently under maintenance. I wanted to see it's user interface. It's logo looks like the eSports organization, Cloud9 
Anyway, you said that one of your "niche" would be to add more trading pairs for Tether(USDT). This is a nice feature, since I don't think most exchanges have this. If I'm not wrong, most exchange sites only has BTC:USDT, ETH:USDT, and LTC:USDT. Also take into consideration that what if, shortly after your exchange site is up, the top exchanges also implemented more trading pairs for USDT? How would you drive people to use your service then?
Yes, no trading fees is a very good feature in my opinion, but I don't think that itself would attract most traders, as probably only the bigger traders are going to take advantage of this. Just my 2 cents.
Anyway, you said that one of your "niche" would be to add more trading pairs for Tether(USDT). This is a nice feature, since I don't think most exchanges have this. If I'm not wrong, most exchange sites only has BTC:USDT, ETH:USDT, and LTC:USDT. Also take into consideration that what if, shortly after your exchange site is up, the top exchanges also implemented more trading pairs for USDT? How would you drive people to use your service then?
Yes, no trading fees is a very good feature in my opinion, but I don't think that itself would attract most traders, as probably only the bigger traders are going to take advantage of this. Just my 2 cents.