San Francisco, CA
I think the work Pat did to make the "interior of the cab" look really neat and clean is benign, even for someone who might lean on the "purist" side of things in general.
If the game still "looks and plays" like Funhouse should, I don't see any harm to making the inside of the cabinet look great and having it tricked out.
If you asked me what I think about tricking out the PF to the max with toys, or if I thought the cabinet should be painted its original design or not, then I would think twice about it.
It's not like the interior of the cabinet was ever designed/built to look great, imo this kind of work is ALWAYS a welcome upgrade.
-mof
