So far I've played to 5star fame. I had to cheat to stay afloat during the early stages, but I only figured out the power of no-cost digital sales at 4star fame. I also have a better understanding of making money then before. (Will have to do a 2nd run without cheating, also letting my idols have free reign in social media/streams to destroy themselves generate scandals. Free reign dating has so far been tame.)
1. Break room girl interactions need more variety... More importantly, the fact that the current two interactions, arguing and hand-holding are pretty much marketing bait. (When there is no discernible changes from such... emotionally charged interactions showing up.)
2. Setting up concerts, higher star singles at the top, rather then the bottom. Takes a lot of scrolling once you get further in. And/Or more sorting abilities that could be defaulted into.
3. More ability to sort the girls everywhere you choose between them.
4. Girls shouldn't be locked out of being picked when doing concert set-up. (For example, if they are training 'now', they can't be added to concert parts, even though the concert is not happening 'now', nor anything else related to it for that matter.)
5. Raising other stats, instead of simply having them stay static/declining from age. (Improve/decline cute/cool/sexy/pretty to better match the companies style, in order to get a better position and/or simply the fact that they are growing up, which shouldn't be purely declining everywhere.)
Really, late bloomers. It shouldn't be binary.
6. Improved automation and ability to set toggle/auto with limitations for doing performance/promotion/spa treatment activities. Player can't be expected to camp over the activities screen, when they have other things to be managing.
6a. Alternatively, set-up a schedule for performance/promotion/spa treatment activities.
6b. Performance activity mostly becomes pointless later on when you can make 2 Billion profit from a 55 million concert. Or pump out no cost digital release singles for over a million each. (Granted, it takes awhile to get there and I had to cheat to stay afloat early on.)
6c. Promotion activity seems pointless. Early on, you need to make money to pay the bills and fans already trickle in if you spam release singles to generate income and buzz.
7. Lyrics, need another employee or even having an idol do it.
8. Continuous training. Drop a girl there and only train her. An additional option to the current full random auto-train.