The kind that hopefully will meet a solid end at some point. The way things are going, he should be aware to not let this turn into another Ecchi Sensei. Too many characters, too many storylines, too much "open" world to develop and a planned script that, according to his words, will take literal years to meet it's planned end.
Viewing post in NEW RELEASE: 0.30.0 (Public Version) comments
It's tough to keep a balance between advancing the plot with the newer girls and keeping tabs on the older girls (and there are still two slots on the "side characters" page to be introduced, if that is any indication). That said, all of the storylines so far have been incredibly interesting and well-written, and I'm looking forward to seeing where it goes.