I understand why Riot wants early levels faster now

To entice supports to give their adc more experience points by playing and roaming around. In short "We know Bard is crap, so run around the map, collect your chimes, get a small amount of xp, and let your adc soak up all the experience. This will allow your team to get up in levels, which will allow your minions to push harder, which will allow towers to fall, and the process all starts again."

Great idea Rito, great idea.