It's not that I can't imagine uses for AF stabilized TS lenses, it's more down to what cost hike that would cause and would that price increase justify the new features, considering there are already so many AF prime lenses with IS, that work just fine and cost way less than what these super TS lenses might go for.
TS lenses have always been a super niche product, so my reasoning is how many users would actually need an AF+IS+TS lens and how many *new* users would such a lens attract. If you're a photographer who shoots architecture, it's highly likely you'll plonk your gear on a tripod, AF or no AF. It's hard enough to level everything out even with a geared head, let alone handheld...
If you're just looking for a prime lens for handheld work, video or general photography, well then you're way more likely to pick up some of the VC lenses, considering they'll inherently be much cheaper, faster and have way better aperture than the TS lenses.
Considering majority of my work is done on TS lenses, I would much prefer to have the theoretical zoom feature more than anything. And I'd be willing to pay for it big bucks. 10-20 TS? Or 15-35 TS? Or heck, 24-70 TS? Boy... Those would make my loins all warm!
If Canon is sticking to primes, then trust me - I would MUCH more prefer lens collars than say AF, or IS. I don't need AF for my work, let alone IS. If the lens had it, sure, I'd probably use AF from time to time. But I often switch to MF even on my AF lenses, simply to nail the focus exactly as I want it and make sure there are no changes from shot to shot, especially when doing stacks or panoramic shifts. I think vast majority of users for Canon's TS lineup are like me. And I don't see a bunch of wedding photographers picking up sets of autofocus TS lenses to shoot bridal sets. It just doesn't make sense.