It’s pretty much impossible to try and pin down what games will be/are rare for an actively supported system. Games that are rare today can get additional print runs at any time. Which has happened a ton already. Stuff like the Atelier series, Attack on Titan, and Turnip Boy were all considered rare at one point and then were given additional print runs, thanks to VGP.

The only one Im sure that won’t happen too, that was mentioned already is Skylanders. It won’t be reprinted because of the additional toys