Recently I have been thinking that its going to be EOS to be next listed on coinbase. A huge mining company are raising 100million to get a huge stake in Eos once they move on to their own blockchain. Another huge exchange is also opening its own dedicated Eos driven decentralised exchange which is also super bullish!
Coinbase have also come out and said they do supports ERC20 tokens, they have also announced new coons will be listed this year. Im getting a strong feeling one of the coins will be EOS! (I must add that there is something about broc Pearce and his connection to tether that gives me a seed of doubt)
There are certain criteria that Coinbase uses that help them determine if a coin is a good candidate. I think there is potential that EOS could be added at some point but I doubt so while it is in the ICO phase.
There are a few other cryptocurrencies that I think are also potential candidates that could compete with EOS such as NEO, and IOTA. It depends on which ones can pass the criteria that Coinbase uses to add a coin.