It will certainly reach top 5 or top 3 once they list ICN.
Once volume picks up and ICN rises to top 10 as you say then I'm almost certain they'll list it!!
At this moment ICONOMI is 15th in cap and 15th in volume. Its looking great!!!
Not sure polo is needed for Iconomi. 2 reasons:
1. Iconomi is all about bringing fiat to crypto. polo doesn't help in that. for the 1000 time - pump and dump is not a milestone that Iconomi needs to meet.
2. Like MoveCrypto said - poloniex did not have a lot of trading volume before they listed ethereum. Only after listing ethereum they started to dominate. The same can happen with Kraken.
They do need to catch up on UI and UX though.