This is such a good idea that at least one manufacturer, Rockwell, has already built a commercial version...

https://www.rockwelltools.com/en-US/...tent=Apr-29-16

I bought one of these and can recommend it highly. It's great in my crowded shop; I can lift it out from its hiding place, plop it on the bench, and get 'er done quickly then, just as quickly, get it out of my way and carry on.

I've long contended that bringing the work to the (power) tool rather than the tool to the work provides much better control of the job. That's not to say that hand-held tools don't have their place; I can't very well bring the kitchen wall to the drill press.