Well, I just played a game. Initially, seemed okay. But now I think you guys really broke the balance of the game. Probably the main thing keeping powerful supports like Soraka in check was having to buy so many wards. Warding is a serious issue now:
1) Rubystone allows you to gain 5 wards everytime you go to base. Don't nerf it, get rid of it.
2) oracles limited to 5mins now? Add this to rubystone and you virtually eliminate FoW. No bush isn't safe if you are in lane. Basically, jungle is in a position that support used to be in, support is in a position that jungle used to be in influence wise.
Now, granted, this comes from one game won as Soraka, but I have to say, it is one of the easiest Soraka wins I have ever known.
EDIT: Also, lower tier games, this probably won't affect much. Lower tier people are just too excited to pay attention enough to ward. Unless of course their team tells them to.