Yeah I would definintely get girls unlocked faster if I played it more consistently. However, the incentive isn't there even when it comes to events. You need what 1k or 2k of the item to get the event girl.

I have never even got 100 of the event item even at times when I played a ton, I actually assumed it's one of those games that basically makes you pay for the event girl. It's much easier to play until you hit a goal for a level up on a girl and then just play passively until you unlock it and repeat.