I respect and understand being a purist on the matter. I was going to do this to a joust cab that I saw for dirt cheap on criags, assuming it was trashed. When I got it, it was pretty darn cherry and still working. I knew it would be a sacrelege to not just keep it the way it was. I bought it and left it as such. And this was before I knew about the forum and how passionately purist some here are.
I got the SI DX cab being sold as a 60-in-1 jamma, already messed with. It came with no back drop art. No light. No original innards. No original CPO or even panel. No mirror. No monitor. All I have is the cab, and a very scratched-up bezel The side art is fairly okay, but still pretty scratched and scraped.
My goal was to get a beat-up cab for cheap and start my mame from there, rather than from scratch...because old cabs ARE cheap when they're beat up... because they either go to a guy like me, or they remain in arcade limbo for eternity. I can either dump a ton of money and work into it to restore it to original... which I didn't set out to do... or use the ol' cheap, beat up cab as a base to start my mame project. Hell, I even want to preserve the side art and bezel and keep it 'SI Deluxe'-looking as possible. Either that, or the cab will have remained in trashed and already-partially-modded hades. I think I'm still in good favor with the arcade gods.
vanrose72 and menace pretty much did the same things to the same cab and did a bang up job. I don't recall seeing their project threads being crammed with flame and people screaming 'blasphemer' at them.

Okay. Done now.