I have wanted this feature in InDesign forever, so I'm putting in a formal request :)
It would be so great if "Case" could be overridden as a part of a paragraph style. So you could set a heading style to be All Caps, or Title Case and it would override the existing casing when you applied the style, and reverted when you removed the style. This would be such a time saver for me working on long reports etc where the original author has paid no attention to case consistency, or when you decide you want to make all your Level 1 headings All Caps as a design choice.

Seems like this should be easy enough for the geniuses at Adobe to implement. PLEASE!!!