@riot- You mentioned you wanted to rework runes a while back.

http://na.leagueoflegends.com/en/news/game-updates/features/upcoming-rune-balance-changes

We're still committed to exploring the best way to make runes an interesting and dynamic system for all players, but in the meantime we'll be implementing some basic changes in the next patch.

With season 5 upcoming, do you have plans for a more extensive rune rework?

The customization that runes provide is already gated by level, like masteries. I'm wondering what purpose such high ip costs have on runes, they simply limit the ability of newer players to define their playstyle.