I've done all ending. Good polished game with diversified endings.
I had some struggles with controls and with what is interactable AND usefull, and what is not.
Could be good to be able to skip faster interactions / dialogue etc... The game design need you to start over and over, so at some point you just want to skip the part you know to experiment others interactions and ending.
Also would be good to be able to check what are the ending you got, like clicking on the post-it show you the ending screen of it.