Concerning runes

In the "Runes and Masteries" section of the video, New001 talks about how runes are a "Huge painpoint" for new players. He goes on to say that pregame can be made more strategic. My question is how long will it take for these problems to be taken care of, as a new player who is now level 20, I am tempted to buy tier 3 runes and start preparing for competitive play. But I don't want to do so if Riot is just going to come along in a couple months and implement a fix to this problem that will effectively make the IP that i have spent on runes meaningless. If anyone could shed some light on what the changes will be or (perhaps more importantly) when those changes will take place I would appreciate it.