To be fair, Soraka has always been one of those supremely annoying 'turns laning phase into a gulag' unfun champions to play against, but she's never been particularly strong, either. Well, outside of very briefly when we saw that surge of Soraka mid, and her numbers were stupidly powerful. The new changes are interesting, but I doubt we'll see her much still when Nami, Thresh, Leona, Morgana, Zyra, Lulu.. okay, most supports are much better and provide engage, disengage, and general utility for the team and the carry.
Viktor is rather powerful now though I agree, and feels much smoother than before. I think we're going to see his numbers take a nerf soon because at least from my testing he seems to be a little too easy to get out large amounts of damage early. *shrug* We'll see.