As long as the combat features can be toggle-able, I'll be happy with the update (specifically losing blocking and the tool cooldown). I'm really looking forwards to the new blocks, arrows, mob, shields, and the elytra because they all add a new gameplay mechanic to the game. The blocks, because I'm a builder and they add a new yellow-tanish colored block that isn't ugly like endstone, the purpur blocks (because purple is a nice color), the grass path blocks because paths, and a new head to mount above fireplaces. The new arrows because who wouldn't want a arrow that makes your target light up brighter than your future (besides the person being shot). The mob, i.e. the shulker because new kit yay. Shields so that we could actually have a riot shield instead of just an iron door. And the elytra because it could probably be used in a new kit (like a fallen angel or something would be pretty dope).