The devs should fix the wallet/sync issues first and i think this is the only roadblock. If you guys have noticed the trading in back cryptopia for XRB, it was very active and active trades equals profit for exchange sites.
If other exchange sites list those dead/scam coins, I don't see a reason why they won't accept XRB (in the future).
My wallet synchronising usually during half of hour. I don't think this is very critical
About exchanges, I want see XRB on the bittrex at least =)