If I resize an individual area type object by dragging the bounding box
handles, its text rewraps, but the point sizes and aspect ratios of its
characters remain the same.

I'd like the same thing to happen when I resize area type that's grouped
together with other elements. However, dragging the bounding box of a
group stretches and squashes the letters of any area text inside.

Does anyone have a trick to get around this problem? The only workaround
I know of is to individually resize each group component using the
Object...Transform...Scale dialog box. It isn't very convenient.