It's nice that devs are trying to make this game more enjoyable, but from everything, Kobans are the most important thing, and it should be balanced. And what do we have now?

1. Getting money from your all harem for 2 Kobans - why i would ever do that?
2. Refreshing enemies in PvP battles - again, why
3. Refreshing energy and battle energy - even if you start game now, you will at some point catch up to this moment and if you're spending 25 Kobans instead of waiting few minutes, i need to ask - how much money do you have?
4. Epic Pachinko - if "offers" higher doesn't interest you, i guess you will focus only on EP. But, seriously. If i'm grinding 900 Kobans, and there's event, well, i guess i want event girl. NOT troll girl. Seriously, iirc, at some point there was a feature, that 900 Koban EP was going to give you event girl. And now it's gone. So you can hope for the best... and just get that one girl, you'd never wanted (now).

TL;DR Devs need to make some big changes to the Kobans system, cuz rewards are underwhelming, and no one would actually buy Kobans rn, with their current state (unless they have too much money)