Have you thought of a plan to smooth the door handles?
Are you going to weld a plate in or something similar?
I thought of welding plates, but decided against that as I don't want to warp the thin metal.
I'm planning on putting some fibreglass matting behind the door lock and building it up a little then finishing with normal body filler.
As for the handles, I'm going to use the matting and fibreglass filler, but first I'll have to use something to hold the filler in place.
My old dentist actually gets the credit for this idea
Going to drill some holes in the handle apertures and put some self tappers in some of them so that they will sit just below the final level, then use the fibreglass filler, and finally body filler. I will be treating any exposed metal first before filling so should be fine.
Hopefully the 'pins' will help secure the filler in place and stop it from moving.
Sounds a bit barbaric, but hopefully should work.
What do you think?