Remember Coss will be more than a exchange, debit cards will also attract new customers.
Coss will also do icos for new projects in near future.
This all will make Coss more popular.
COSS has lots of potential. The exchange alone will generate small returns for token holders.
What I like about COSS is that the dev team is active in slack and updates/new coins being added to COSS exchange regularly is a sign of good progress.