Expand your coin portfolio please

I have been trading here for a year and two months now. I am mostly in BTC and Tether. I have never experienced any issue or delayment. But I believe trading fees, especially Tether, is a bit high according to the other exchanges in the industry. I am aware Tether is generally problematic for its high transaction fees but it is really annoying to be charged 34 US dollars for 2300 Tether. I hope they will lower it and add many more altcoins and tokens to their portfolio.