I see what you mean... very good points! This accordion pocket idea sounds like a possible big winner, too.

Do you have any idea what a soft pouch in back would do? A front panel like you have now, soft gusset and full sized pouch, and the strap still attaches to the front panel, to try and ward off sagging? Think that would work?

And I don't mean to jack the thread, but I'm just a man who needs to store stuff in his sporran.