Well from a fan perspective I do understand you. I was also hoping for a bit more gameplay feel to that DLC myself when it came out. That said it was done in 1½ months time if I remember correctly and there was not really time for doing more then what you see right now, it was honestly really well done with that short timeline.
- Starke have mentioned to try to add DLC content into the main game when the remaster version will drop.
- (don't sit and wait for it, its gonna be some time for this)
I understand that. Again, I didn't want to sound rude, but at the same time I wanted to be sincere. Personally it feels more like a H manga than a game, because let's be honest, there's no gameplay. Which is sad, because the writing wasn't bad, and the "main game" is extremely polished, it shows the effort from the devs on the product. The add-on, while probably not on purpose, doesn't feel that way (in the player perspective), but again, probably due the amount of time as you mentioned. Who knows, maybe in the future maybe there is something with actually gameplay.
Anyway thanks for the answer.