Ability to apply business rules to specific quick view forms.
I'd suggest a scenario being that you want to display a Quick view form, but only if certain conditions are met, otherwise hide the quick view form. Just like you can with normal fields.
I can also see some great use for this feature.
Specific use scenario for us - we use the 'Case Reference Panel' Quick View Form, and display it on Emails. This gives tech agents a quick peek at relevant info from the email's regarding Case. However, it would be great if we could hide/show fields on that panel, based on other conditions on the Case (i.e. what category/subject the case is).