Looking at this project but I don't know, the website is so amateur and they aren't really focusing on the exchange, don't know if this is better investment then Kucoin, KCS right now are really undervalued.
And the fiat money option with verification does not look, they don't offer a new approach to it.
I'm not sure what you're really asking for. New approach?
And the website is fine. It's a bit flashy compared to Binance and KuCoin but neither Binance nor Kucoin have good websites in my opinion. The thing about exchanges is that they can't really look much different.
Why would I change from Bitifinex, Kraken or GDAX for COSS? When talking about FIAT?
Not a single chance, they do not offer any advantage from the majors, the concept is a mess, they talk about wallet service, debit card, missed the focus.