On the 1/4-20 threaded mount, it's an easy job to epoxy a nut of that size to nearly anything, and on something as light as a cam it would hold up to anything which the cam could survive
I'm a huge believer in form following function as long as nothing important is lost in that process. It's obvious that tiny cams are possible and that nearly any shape is possible. We've got small match-box, tubular, cubic, and disc-shaped cams already
So the problem is really this:
making a really good cam in those form-factors. Another possibility which I haven't seen explored yet would be a credit-card form-factor
; thin and flat with as short a lens/sensor as is possible. The whole card could fold to 90 degrees making mounting possible anywhere.
We've got 2 out of 4 which are good now (Mobius and WR-1) and that F1 has it's appeal too. It makes little sense to have a huge box in your window when a smaller one does equally well so I see these tiny cams making the others rapidly obsolete once their performance becomes equal or better. It's getting there
Remote lens cams will eventually take the permanent install markets but many will still want removable cams.
The future belongs to those who have the vision to see what can be done with it then make it happen before anyone else does. Those who move too slowly or who cling to outdated concepts will fail or fade away
Revising the Mini is a good exercise in thought but it is a cam whose time is coming to an end, same as the wedge-cams and the brick-on-a-stick cams. Kind of like my old GE P-780 radio, arguably the best portable AM broadcast band receiver ever made, there's just not much left to listen to on it and now everyone uses tiny devices to listen to their music on instead. It is still useful but it's totally obsolete for it's designed purposes and nobody would buy it today for that purpose at any price so there's no point in improving it even though that is now possible. I still love it though
Phil