That might be the appeal to you, but some of us actually read the text on screen for the story.
Also, you know what helps people remember the characters outside of what they look like ? Giving them a reason to be invested in and care about them as a person. This means you eventually have to develop them as more than just a fleshpillow to be pounded when the clock ticks over.
It was a very vocal issue i had with the game especially prior to his self imposed break. It wasnt even that as other comment said that (basically) people come for the story and cum for the sexy scenes as a sticky side bonus - it was all about fan insert tall dude who was a virgin one day and within a week had fucked over a dozen different girls, was a literal male prostitute to pregnant willing older hotties and was openly parading a harem of women willing to share orchestrated by his girlfriend who according to the narrative prior to that week was not putting out at all... it was all WTF?
He moved house about 4 times in a week too. I have openly admitted several times after long breaks in the game waiting for full day releases needing to come here to ask "who was that girl again? oh its that one from ages back who you ran into briefly walking her dog" which of course wasnt an issue for super fans who replay and write their own fan fiction on the cast but yeah it is hard to not be REALLY brought out of reality with it. As such i dont think the real nitty gritty is hes gotta develop the girls more (too many characters to now and many get added each full day playthrough i check out) but more the story had to be better paced and be more cohesive so its less porn movie script and more interactive game script. We cant say BD doesnt pander to instant gratification as when i last played there was a handy dandy chubby hottie who i had never met before but conveniently the nurse knew and was offered on a plate for serious fucking on screen before we even bothered with such trifling matters as say... i dunno a name never mind a deep developed characterisation to care about seeing again haha
Its this games style, its this devs style and i like it. Hes just needed to streamline it a better, control the pace somewhat and i think hes really managed to re-focus since his break even if i look at updates and only see renders in updates but as i generally am happy to wait for full days to be released before i jump back in i get best of both worlds but i do understand people checking every update hoping for fuck some random chick be that harem regular, complete stranger or even a saggy nurse as thats the president the game has set based on previous releases.