Offcource Bitcoin with stable coin and choose stable coin that more legit like TUSD,  others crypto pair is choose 50 top ranked and make pairing also with stable coin. For beginner trader just like me, i prefer to choose crypto pair with stable coin. I think one thing that make trader interesting to use your exchange is some features and benefits of your exchange, currently no one exchange provide OCO order, so trader will easy to manage the risk and potential profit. Offer trading competition to attrack new trader.