Honestly, I'd love a demon that was actually based around temptation on some level. Kass gets hyped up a lot as being some kind of supreme seductress, but she shows up, bluntly tells you she's going to steal your soul, crudely goes on and on about the vulgar things she wants to do to your body, tries to force physical transformations on you during sex, and then peaces out immediately after cumming to go turn another batch of locals into perverted parodies of who they once were just so you can fight them in your seemingly futile efforts to '''stop her'''.
There's a lot of sandbox games in perpetual development on sites like Patreon that gain tons of backers just by offering character customization. The fastest way to get furries and weirdos like me to start paying attention is to offer them a chance to be whoever they want to be in the world you've written for them. Even if this game's customization is entirely surface level, just having it there is enough to bring in a lot of cash. As a point of comparison, it's like NTR, including the concept of netorare brings in more buyers for that alone, even if it's just a single line of dialogue at the very start of the game that implies that there's some kind of preexisting relationship to be faithful to, that's enough to sell the game to some folks.
They can't completely get rid of character creation/customization because that's what brought them their audience and money in the first place. If that's gone, a lot of those folks would just walk and stop tossing money at the game. People have forked over cash just to have new transformations to use for their idealized avatar.
Honestly, I have a hard time playing any game that won't let me create my own character for myself, even if I recognize that the game is good, if I can't even name the protagonist at the very least, I struggle with getting invested. But yes, if I sit down to make a character I feel really good about in a game of D&D, and the game starts but the DM is deciding all my dialogue, actions, and reactions to things for me, I no longer feel like that's my character, and I have no idea what I'm even doing there. Very frustrating, because it would take them LESS work to just not write words into my mouth in the first place, there are examples of good interactive silent protagonist stuff all throughout modern media. I can't imagine they don't know how to write interactions that way.