The ability to move the rollover lane on the skill shot while the ball is in play on both Medieval Madness and Attack from Mars. That is awkward coding and everyone should be getting the skill shot on every pseudo-plunge. I’ve never owned either, and maybe that can be changed in the settings.
The playfield art on the Lord of the Rings is horrendous. That right ramp shot is also pretty bad.
All three are incredible games, but to me those are warts.