Try to look on whats been currently offered by Binance. Im not saying that you should mimic them but at least try your best to give out the same service that they are currently giving or e even going better ahead of them but this wont really be that simple which is normal since exchange market is quite saturated already.
I second this. I would like to see new exchanges that could actually compete with the likes of Binance, Huobi, and other major exchanges as well but it's getting harder for them to do that now. Most traders aren't really looking for new exchanges anymore and one reason for that is trust issues.Just one more thing which your exchange shouldnt really have that strictly imposed KYC or else you do know on what would happen the same on others exchange that becomes heavily regulated which these platforms drop significantly on the rankings or popularity.
They're applying for FIAT license which suggests they will be imposing strict KYC to comply with regulations. 
