Does that make these more acceptable to you, Buzzard?
Yeah, more or less on the same page now.
Anyway, the relevant question here is whether or not these guys are balanced against other Thaumaturgy effects of the same complexity.
Is a single-function-robot Flying Harness that lasts a lifetime roughly equivalent to a 24-shift ward that lasts a lifetime?
I'm honestly not sure. But if not, I want to make it so.
I know for a fact that problems will likely arise anyway due to the problems with the Thaumaturgy system in general. But that's no excuse for not trying.
Not sure how you're calculating shifts necessary but bear in mind you'll need enough to A) make the construct last X duration, B) summon the controlling spirit, and C) bind the spirit to the construct for the same duration.
So, a lifetime Courier Capsule should cost at the very least: summoning cost (6-10)
And in another phase base construct cost (?) + duration + binding (10-14) + duration + (add a temporary power X number of powers) + (add duration to powers X number of powers).
Honestly, I've no idea if they're balanced or not. I go spell by spell on thaumaturgy in my games and I'm incredibly arbitrary about setting limits on it. Some things I just will not allow for a chest deep wizard that I would allow for a 15 or 20 base refresh wizard, no matter how much time they spend on it.