Ethereum is too popular, it will be like this for a long time before it scales
We agree with this completely which is why we are about to build a sidechain to Ethereum to run IDEX on. Ethereum is going to take many years to scale, it is up to us to solve this problem ourselves. A sidechain will allow us to keep iDEX decentralized while actually having it work too, something most dapps on Ethereum mainnet won't be able to do during the coming backlog.