My point is, why have a building in the demo parks that says 'Arcade' when the arcade machines don't actually function? So this was a feature request - and would be especially good with MAME support for emulating all those classic arcade games. Hopefully this can be something for the near future.
Outside of having to actually code the games, there would be serious legal considerations as well. If Pantera tried to throw, say a Pacman in there, they would instantly be hit with a DMCA takedown from NAMCO, since it would be part of a larger game that they are selling for profit. Even Skee Ball has been owned by the originators for over 100 years.
Having said that, this is one of the things I thought about when I suggested a scripting feature in TPS. Coding these type games and selling them in a larger package, such as TPS, does constitute unauthorized use of intellectual property, however, one of us coding the same thing, utilizing an in game scripting engine, then sharing it with everyone else is fine, since it falls under educational and fair-use.
I want ahead and put a feature request in on Mantis:https://themeparkstudio.mantishub.com/view.php?id=8669