Custom game IP
I still don't particularly care for the new community platform, but if I ever am going to be sold on it, its going to be in how it helps address important issues. One such issue has been the removal of IP from custom games.
There has been a thread on GD for some time now talking about this. http://forums.na.leagueoflegends.com/board/showthread.php?t=3832701
Basically, it seems that IP was removed due to abuse of the Refer a Friend system. It also seems that Riot wasn't aware of a portion of their own player base, and their preferences in gameplay. The linked thread is full of stories of people who's preferred way of gameplay has been ignored by Riot.
Also in that thread were several suggestions on how to fix the problem so that IP could be returned to custom games. You should also remember that the amount of IP earned through custom games even before was drastically less than in normal games, so its really not asking much to ask for the return of IP to custom games.
It seems that after Riot's initial response, they have ignored the issue. I'm not sure if its because of the world finals, or work on this community platform, but as far as we can tell, nothing has been done. IP should be returned to custom games ASAP, otherwise it proves how out of touch Riot truly is with the more casual players of League of Legends.