this isn't a controversial issue, its just dumb. Paying to get them to complete the game is crazy. Sure there have been code updates as long as there have been SS machines. But those were generally just bug fixes, not adding major segments of gameplay that were always intended to be in the game and they did didn't get ready in time.
The only way to justify paying for a cope update is something like BoP 2.0 (which I've already done). If williams decided tomorrow to drop new code for MM or Space Shuttle that completely changed gameplay and sounds and made it essentially a new game then I'd consider it. But both of those games are complete as is, neither needs new code to be fully playable as they sit now.