I want it all. I want cassette rudders, but I want the whole cassette to be able to kick up (like the new Farrier system). And I want T-foils, but I want them to be removable and movable to different locations. And I want the T-foils to be able to be angulated up or down depending upon what works best in different conditions and points of sail.

Am I asking too much?

Nope, not if you intend building them yourself !
While you`re at it, Mary, I`ll have a set. Make them black, please.

What you`re asking for is probably do-able, with a huge amount of engineering, design and fiddling. Once you`ve built 7 prototypes and tested them thoroughly in all sorts of conditions, you`ll probably end up with something remarkably similar to the Stealth foils as the best solution. Everything has a beginning and an end, and they`re usually in the same place.

Cheers
Steve