New support looks pretty cool. I feel like theres going to be a **** load of troll Bard players at first. Zhonya-ing an entire baron teamfight and just dancing, stuff like that.
Also I'm kinda sad about what they did to zilean. He actually brings more utility now than just damage+revive and zipping around the map. But my god is it hard to land it, you basically have to land TWO fizz ults with smaller attach radius that you lob instead of launch. Its really good but it changes his role a lot, it'll be a while till we see people coordinate him well with teams. Its also so ****ing hard to set up the stun in lane, he really needs an gank (if midlane) or adc with engage abilities to get it started. Kinda sucks that he isn't just a reliable damage bot + free GA every 45 seconds, but I get why they changed him.
But now like every other utility skill shot character, you're expected to be able to land your ****. He's just not that scary anymore right now, he has picks with his good slow, but in lane if you have to run up to them and slow them so you can try to double bomb them, you're going to take huge chunks of damage. He's probably good with like, ashe/varus/vayne and in a coordinated team still.