warning, rant incoming
yeah, I hate 1.9. you attack, and you have to wait about a second before you can attack again, which is HORRIBLE when fighting creepers. also, hunger goes down even faster now. I literally ate a mushroom stew, healed 3 hearts, AND WAS HUNGRY AGAIN. I didn't even heal all my hearts. making healing require hunger was probably the worst idea since laser sharks(guardians).
also, the dual wielding is so confusing, sometimes it uses the left item, sometimes the right, sometimes both. it's klunky and difficult to use at best. also, due to the item cooldown your tools and weapons spend a lot of time offscreen, as they go down offscreen whenever you scroll, attack, mine a block, etc. the sweep attack seems to be almost exactly the same as the normal attack and just makes things unnecessarily fancy.
shields are pretty much the only thing that actually works reliably in the offhand, but they cover way more of the screen than I'm comfortable with. I fell into a hole because I couldn't see the ground due to my shield. minecraft was never meant to be a combat oriented game, it's sandbox with some survival. adding complicated combat mechanics doesn't fit and just works badly.
oh, and then there's the fact that sharpness 3 does literally A QUARTER OF A HEART more than sharpness 2. as if it wasn't hard enough already to get decent gear what with durability, prohibitive enchant and repair cost, and finding diamonds. regen potions are basically useless now, as even natural regen is faster than regeneration 2, which only lasts about 20 seconds anyway.
apparently, they're not even done updating. I've seen plans for minecraft 1.10. the game is dead, just let it die. it's a festering corpse crawling with flies and maggots, just LET THE GAME DIE ALREADY.