You'd be amazed at home much time and how many resources useless UI animations take up. Go turn "Animation Scale" to 0 in the android developer settings page, and it will feel like your phone is 10x faster.
Btw, I also have an option under Accessibility that says "Remove animations" that doesn't require having Developer Mode enabled. Seems like an easier shortcut if you only want to turn off these animations.
Maybe I can wait till the pixel 5... oh.