COSS will implement FIAT in Q1 or Q2 2018. Plus there will be more and more ICOs on the platform. And eventually a market place.

It has so many upsides and so few downsides as downsides would be competition and there isn't that much with all the exchanges not accepting new members.

Only downside is the lack of workforce, and this is one the main reasons COSS has been lagging a bit behind Kucoin. But if you're a long term holder, COSS is the way to go and will keep on giving 50% of revenues in dividends, not like Kucoin. Rune Evensen who's spearheading the platform also legit seems a nice guy you want to trust.