Some thoughts on rules.
As a fan of deep rules I've been enjoying Toy Story 4's ruleset. It's nice having a game where there's a set of clearly laid out objective (7 scenes in this case) that can be played / completed in any order. The 7 scenes to light the wizard mode are no easy task and I say that as a decent to average pinball player. I think I've only completed one or two scenes so far. On my game I've turned down the unlimited kickback setting and disabled ball save to increase the challenge but I'm not sure if that's needed long term, will see. Besides the 7 modes there's a ton of other stuff to do such as playing through 11 carnival modes, earning wheel awards (mini wizard more for that) and 6 multiball modes. The 10" LCD does come in handy for all modes and is easier to reference while playing the game versus looking up at the main display.
As for the wizard mode I learned today in the owners thread some details about the Buzz and Woody path's. Apparently once the 7 scenes are played you can choose what wizard mode path you want to play, either Buzz or Woody. As previously mentioned there's multiple stages for the wizard mode but I'll wait to see those for myself one day as I don't want to spoil anything. Going after the second wizard path increases the difficulty of the 7 scenes.
Overall I'm enjoying the ruleset more in Toy Story then some of my other JJP pins including Wonka and GNR. The rulesets in those games are fun but there's just something about how everything is so open, approachable, and having goals clearly laid out on the 10" LCD that is giving the ruleset in Toy Story the edge. If there's anything I would change with the game software wise at this point it would be the repetitive and too laid back song that plays during some carnival modes (just use it for one or two modes, create others) and adding a second mini wizard mode for completing a certain number or all carnival modes.