Progress has slowed on the Mac thats for sure, and its great that there is now a real alternative with the Surface, but I think Apple still has far reaching goals when it comes with the Mac. So I can understand when users like yourself just can't sit around to twiddle their thumbs about waiting for Apple to move. It's time to jump ship.
As for Logic Pro X, Apple has the Logic Pro Remote which is not exclusive to the iPad Pro:
https://itunes.apple.com/us/app/logic-remote/id638394624?mt=8
It's been around for over three years and an app for FCP really should have been released a long time ago, but it seems Apple is committed to the new Touch Bar at the moment.