Obvious brihaus futanarization option is obvious. Could've just done that. Why not expand instead of adding new characters?
I really don't mind futas as long as they come with a pussy. Dick above the puss makes the girl better. The problem is they're all the same and boring like you said. Boring designs, boring personalities, doesn't really go anywhere with story and character. Maybe it's also because of the oversaturization, and the apparent fact the devs don't really have any interaction with IRL people hence don't know itnerpersonal relationships, that characters are written for a scene and not the other way around. Their orifices are the only deep things about them.
Which brings me to my point, which is that I'm sure people in this thread wouldn't be so mad about the flood of futas if they had good quality and amount of content, and males/females also had good content in suffiecient amounts.
AND I don't mean in hundreds of characters, this game has way too many NPCs for the amount of content they have. I assume it's all submission characters that got put in the game, because some of them don't warrant an existance in my opinion. What could've been, is a number of important NPCs with a lot of scenes, customization, quests, build a connection with them.
Instead it's all fuckbuddy giant horsecock dommymommies/musclemommies or whatever the fuck else you want to call them, using the player as their cumdump regardless of his deeds and choices. The only weight to these throwaway NPCs there is, is located in their cocks since they'd have even less reason to exist than because someone wanted their new futa OC with like 3-4 scenes and untouched for the next 5 years. The payerbase and obsession with meat over character are the exact reasons why some characters have shit-all content and instead you get so many NPCs that nobody even wants to edit the wiki for them.
TiTS has the exact same problem IMO, too wide of a berth, too shallow waters.