Yer asken me about speling?
Shields within shields would be great except for the weight penalty. My dream would be a separate "emergency module" within the shuttle which has good enough armor to survive re-entry itself. That and you routinely do a pre-reentry EVA to check for tile damage on the outer shuttle. If you find enough to scare you, you re-enter in your pristine "little shuttle."
The only problem is that the whole assembly carrying all of this is probably too big to lift off.
Wouldn't have to be included in the shuttle package. Just a Gemini-style re-entry capsule that could be launched on a moment's notice by a solid-fuel booster. Ditto for a robo-cam.
These would be bare-bones items, not luxury suites.