Cracking at typical locations?

quote:

I think most of these are typical cracking. Some appear due to the thickness of filler used. Thoughts? Suggestions?

Body-flex causes paint, steel panel and/or filler cracking. I've seen all your pictured defects before and they're more prevalent with hard driving or open-track/autocross while running wide, sticky tires. Occasionally, touring vigorously on frost-heaved pavement is enough to crack paint. To eliminate cracks once and for all, some owners seam-weld the entire car where it's now only spot-welded; especially from the firewall back.
Adding a good bay brace in back will help prevent this, as will adding any of the several brands of underside chassis stiffeners now being sold by the vendors. Another uncommon brace is the so-called 'chicken-foot' doubler added to the base of both windshield posts on the front fender top, created & sold by D Quella in CO. Obviously, all this (except the chassis stiffeners) will require repainting most of the car afterwards so it's more suitable for restorations.
Note this is not something that a high school dropout at Joe's Corner Gas Station can handle correctly: recommend a written contract with a Pantera vendor for such intensive, specialist work. But those who have done so say the handling precision is utterly transformed with a seam-welded car. Something to consider...