I think the main reason they're working on with various songwriters because they purposely wanna make generic pop songs. Since the begining, they just stated that they're focusing on lyrics first, then music, but they didnt said the songs/album gonna be differents than the other pop/generic songs on local radio/top 40 chart. This records might be the least that most of you will listen to for the time being but once the 8th studio coming up, I'm sure someone gonna said "Oh, OML is much better than the new shit!". Just like THP. Now everyone "love" THP because it's heavy but during the album released, most people complaining LP trying to hard to make heavy music. So yeah.