Out of the three "innocent" groups so far, it seems like Lovelyz have the most talent, GFriend have the best material, and Oh My Girl are the jack-of-all-trades, master-of-none group. And April are coming for visuals, based on their teasers.
They all have potential though. If Lovelyz can find a less saccharine sound + GFriend can get their vocals together + OMG can do something interesting + April shockingly DON'T become a sad mixture of KARA and Puretty then there is hope.
