Tough call - No clean, easy way to fix it. The front of the dash panel is usually all that is rusted so maybe you can save some of the original dash and patch it? You can always see the underside from looking up so if you leave the VIN tag rivets alone you will always have that. Overlapping the new on top of the old pretty much looks like crap too so no help there.
What ever you decide, my advice to you is never ever tamper with any rivets.