There are at least 2 other competitors to Wings - Augur and Gnosis
And one big problem with all 3 – none of them work yet, they are all still in beta.
When they produce the goods they will make a great investment.
Ref :
https://fly.wings.ai/
https://augur.net/
https://gnosis.pm/
You are correct on Ethereum its looking like it should overtake bitcoin. The mining difficulty level for Ether is a staggering 1,696,250,640,483,555 compared to bitcoins 923,233,068,449.