If a game can be saved, then that should always be first option. I personally would never re-theme a game and I'm surprised this is even offered - but there would be people out there that might want to re-theme. The only reason I can think of is licensing - If CPR cannot do Harlem Globetrotters playfields, and you have a water damaged, soled, burnt up unsalvageable playfield - this option would save the game, but only because it would be impossible to restore to original.
My HGT i had would've been a good candidate for a re-theme with its stuffed playfield. Being unable to find a better playfield i (reluctantly) ended up parting it out and selling most of the parts.. sold just about everything except the playfield.
