[member=7589]mirock[/member] you are incredibly creative! I'm surprised Festool or some creative company hasn't hired you...keep cranking out your ideas!
Yes, I have some instability. may to add screws to vertical column. But its task mostly to be auxiliary support of the same hight of basic MFT = 900mm. Usually I will put details on it and carry from tablesaw to basic workbench and rarely make something small with it. Or maybe I'll trow away my old stool and sit on it)
There's some serious amount of thought gone into that design, nice one.
About the only thing I can think of is using Dzus quarter turn fasteners.
Got them on one of my motorbikes and like the system. There's a baffling array to choose from though.
Super creative, and just the ticket where space is at a real premium. Still trying to wrap my head around how it is constructed. Really enjoyed the video.