That would be amazing, because we are still very limited on crypto/fiat pairs. The majority of exchanges that offer that option, and you can count them by the fingers, usually don't offer to many coins for trade. I really miss that on coinbase for example, and I normally use other exchanges, like bittrex or binance, because they coinbase only allows me to trade 3 alts. If binance started offering fiat as well, it would probably put a lot of pressure on the other exchanges. I would probably stop using coinbase for example, and stick to binance, since they would have all that I need for trading (although you can still trade with no fees on gdax, and that is of course a plus for them).