Hi, thanks for taking the time to write such a detailed review, I'm glad you like the art and everything ^^ The game was supposed to be a 20-30 minute play at first, with a very fast paced and simple story that focuses only on the nsfw aspect, then I added more to the story, more characters etc. and decided to just make a more serious game, so I definitely get the generic part.
As for characters, rest assure that the main ones will get their path completed before chapter 2, in fact, on my patreon you can even vote on who's path I focus on next!