Cannot override different "font sizes" of fields rewritten into one field

This is a bug report & feature request, because a couple issues with font sizes have existed in my experience; just thought I'd share:

• With the way this module has worked, I don't believe there is a way to override different "font sizes" of fields rewritten into one field. I have found it impossible to change the font size of one of the fields that is rewritten inside the same field through the Views interface. If it is changed in the rewritten HTML, the required font-size declared in Views' FORMAT: Show "Settings" for that field overrides it.
• It seems font sizes (often if not always) have to be "declared" (not blank) or fields don't show up. Can't there be a default font size for text-based fields to roll toward for the newbs that don't know this?
• (separate) There should be help text telling people that most layouts require coordinates, height, & width to be declared (not blank) or their field may not show up.