My preseason predictions

Most of the strong adcs remain dominant and shred tanks quicker but die easier to assassins and certain mages. They wont be quite as important.

Enchanters are even stronger than before gg tank sups that aren't enchanters. Zyra will make a comeback. Maybe poppy will be strong with glacial, because her long range auto is counted as a melee auto by the game.

Assassins become really lethal with the domination tree, so much extra damage. Like the new TLD that scales.

Poke in lane will be really powerful and champs that rely on poke become stronger . not necessarily true for mid. I don't even play mid so I shouldn't say. But surviving assasins with new tld may be difficult. idk though.

Tanks will be weak except several will be broken but I'm keeping that info to myself.

Junglers are horrible to play against because of new tools for ganking.

I couldn't say how strong bruisers will be without using press the attack for myself. But I doubt they will be strong.

Vladmir is broken because he can get 15% spell vamp from a rune. Tryndamere is broken. Kassadin is broken. Cho gath is broken.