All depends on the writing and setting avaliable, I do enjoy a nice green flag who is very understanding, but sometimes they can be very boring. And the red flags have the same problem, can't stand one who is bad just for the sake of being awful and nothing else
It all depends on what that plot point does to the rest of the story. As for characters, i'm a bit of completionist so I end up playing even routes for characters I dislike
Like someone said, they are a lot more mainstream and get sent to consoles where the physical midia is a little bit more expensive. What's funny is that they don't even care to port to pc, so you're stuck with console or emulation.
Gachas need to sustain themselves at a long run, so most content ends up locked. I think that the fun on otome/other vn are the unlocking of the routes by playing, not paying.
I looove lamento so much, it's my favorite vn with togainu no chi. Rai's route is the best, i have to contain myself to not rush the others to start his route :ROFLMAO: