Welcome back!
Let's see, you're in for a real treat with this preseason. Most everyone is complaining about how much damage everyone does, with a serious lack of resistances and the new runes being broken. I personally don't see too much of a difference, but, to each is own!
Viable champions? Check a statistic site like this one to see specific data. But I can give you a quick summary!
Jungle: Xin, Rammus, Shyvana are all quite strong right now, along with bruiser tanks of any variety.
Mid: Assassins and Malzahar.
ADC: Tristana, Twitch (As per usual) and Ezreal, who runs a new rune called Kleptomancy, which... Is viable. 57% w/r COUGH COUGH
Support: Leona and Taric are disgusting right now.
Top: Yorick, Teemo, Maokai, Kayle. Mostly bruisers. Fighters got hit hard with the removal of Fervor, so champs like Riven and Darius aren't too prevalent.
Sidenote: The bot lane meta is still pretty prevalent as well, with any ADC getting a few kills early usually means GG.
And of course, the IP being converted to BE. (blue essence) You won't be receiving BE per game as you used to, but rather, every time you level up, you'll be getting a capsule full of champion shards that can be disenchanted into BE. Most of the community doesn't like this, but I personally have gotten used to it, and the uproar, for the most part, has died down.
I hope I helped, at least a little bit! Add me, if you'd like to play a few normal games and relax! Cheers! [slayer-jinx-catface]
