Someone should figure out how to make a Festool track stick to a surface with vacuum like Mafell has done.
It exists! I've been keeping quiet the last year.
I had this problem when making some cabinets. So, I decided to try out an idea that uses vacuum pump clamping (not a dust extractor). After a few iterations and much use over the last year I finally have a finished CNC’d product that I'm really happy with and just geared up to produce small scale so hope there is a demand.
Benefits of my design are that it requires no access to the underside of the work, so is great if your on an MFT or on the floor. No tool required to attach to the rail. No movement of the rail when clamping force is applied. Also, because it uses a vacuum pump system (VacSys or other) you can align the rail and clamp the rail before you start cut leaving both hands free to guide the saw with no awkward manoeuvrers trying to hold the rail down which is much safer.
I have a few units made and I'm hoping to sell them, probably via e-bay to begin with in the next couple of weeks.