In reply to Indesign ALL CAPS button: what OT-Features does it apply? What is "desired behavior"?:
I sort of agree with Nick on this one. Personally, I find parentheses and the apostrophe (& therefore double quotes), a different matter. It does depend somewhat on how the font is drawn -- another case of "if it looks right, it is right."
You also run into editors who have requirements about style. As their money is green, we usually accommodate them, however bizarre their taste...
All part of why I think this is probably a composition matter, not a type design matter.