Wow I had to go check out the videos of Toy Story after reading this and you were not joking. I lasted about a minute before I started to feel uncomfortable. The only way I can describe it is ADHD in audio form. There is way too much going on, abrupt transitions between sounds and music and so much happening it's hard to process what you're hearing.

I only own two pins, Metallica and Iron Maiden and both have great sound design. I think music pins get it a bit easier since there is a track playing 100% of the time. The callouts just have to blend nicely and you're set. With a non-music pin you have to consider changes in music more often and have to make sure the tracks are all thematically consistent.

Metallica has one problem though, there is the sound of a car peeling out when you hit the dead end switch and it's way louder than everything else and totally pulls you out of the zone when it happens. It's not too bad because it's a switch you hit less than most others, but it really does show why good sound design matters.