Fiat deposits and withdrawals. Even paypal/WU/Skrill deposits and withdrawals would be good.
Hope you are well aware of pitfalls of all reversible payment processors. I guess we cannot expect any exchange to be including such payment system until they have some locking period especially for these payment processors. It will be like, you may deposit with paypal but you cannot avail that money for next 40 to 50 days. Your money will be under locked mode. After the dispute window get over, your money will be unlocked for trading.
I guess no crypto exchange is doing it right now as it would be an extra hassle for them and getting them no special business benefit other than covering traders who have ONLY paypal/skrill/WU options. Fortunately, a trader from any country may start using crypto payment options more easily compared to paypal hence exchanges may not bother paypal based users any more.
0$ fee and instant withdrawals between 2 accounts on 1 exchange.
Recently binance enabled
this feature and Yobit is doing it for years in the name of yocodes/yobitcodes.
@OP
You sound like you are studying features to be implemented for an upcoming exchange. It would be much better if you edit the subject of this discussion to more appropriate manner rather than sounding like "you are looking for active traders for tips".
Right subject-line for this topic could be:
* what are features to be implemented for a better exchange
* Features, you are missing with existing crypto exchanges
* Suggestions are welcome to build a dream exchange