Sounds good to me if the cost and other features were reasonable.I tend to agree with you. Some of the EVF's that I have seen on mirrorless cameras are getting close, but as you say, they're not there yet.... I wonder what's under development? It can't be too long before they hit the market at a reasonable cost.Because EVF still sucks for action and sports.
Have you tried an X-T1, A77II or a6000? Modern EVF's are completely capable of keeping up with action, no problem.
I don't think any of them are as good for action. And believe me, I want to see EVFs take over because they are far better for judging exposure and white balance and they're better for MF lenses (unless you have a custom focusing screen). But I just don't think they're there yet, and I imagine at least the next generation of sports cams (7D2; 1DX mkII) will need OVFs.
I know it's not going to happen, but wouldn't the pundits be shocked if the 7D2 was the 7DM A mirrorless high end Canon with EF mount and an EVF! If you think the debates now get rancorous, imagine the hornets nest that would stir up....