Oracle Elixir's and Teemo
IMHO, it does not make sense to delete Oracle Elixirs and keep Teemo's shrooms the way they are. I know they recently make some slight changes to the duration of them on all maps but SR. I think those duration changes need to be brought over to SR as well.
It's those long duration games that worry me the most. Late game Teemo shrooms can and will shred a team to pieces. That's exactly the same time Oracle Elixirs would come into play.
They said they wanted to get rid of the ward wars that was S3. But that seems the only way to deal with late game Teemo shrooms and seems like a huge buff to a champ that already dominates most tiers of game play.
@Riot, was it part of the intention to buff this champ with the removal of Oracle Elixirs?