How to keep players after URF and HEXAKILL modes.

It has been brought to my attention that URF and HEXAKILL make people stop playing League of Legends while those modes are active, published by the developers in an article. If this is true, I have a great way to counter this problem.

Make it so you get a reward for playing the alternate mode.

If you play 3 games of URF you get a 25% ip bonus increase for playing Summoners Rift. Maybe even a higher rate, who knows. That would be a good incentive for people to play regular games after the fun modes, right?