I don't think you're up to speed. Ethereum's 'gpu support' on a second layer is called truebit and is supported by the end. It is well into development. Furthe

I don't think you're up to speed. Ethereum's 'gpu support' on a second layer is called truebit and is supported by the end. It is well into development. Further, ethereum's lightning already has a minimum viable plasma implementation (one of the lightning founders is leading the project)