Part of the reason why ToT has close to 600 pages of discussion despite its 600 delays, is because it's the one femdom game on the planet that understands what a kink is. And it's also the reason why other "femdom" games (which usually have one cowgirl scene and maybe a footjob if you're lucky) have about 3 pages. And the comments are mostly "why is this tagged femdom" and "where's the femdom". That one game I played recently, Sweet Dream Succubus or whatever? Not a single actual femdom scene in the whole game.
Re: Lily and dimensions, Lily's confidence system makes dialogue options unique and interesting. Right from the get-go, you can be a chauvinist just to piss her off, or gradually establish mutual ground and respect her as a fighter. It doesn't work out, but hey. Ethan can at least say he tried.
Khulan's dignity system is similar, but more one-dimensional. No matter what actions you take, and no matter what you say, and no matter how many times you defeat her, she'll never say "Hey, you know what, you've proven yourself an honorable combatant, and eating you would be a huge waste. So no more of that shit; from now on we're just gonna be sparring buddies. And if you lose, you're inhaling my ass."
That would be awesome, wouldn't it? Same with Eliza, my personal favorite. It would be great if she had some kind of arc like "Wow, I never thought I would ever question my scripture, but after you've beaten my EX form 500 times, I'm starting to think your faith is comparable to my own. So from now on, I won't try to and proselytize you. But if you ever want to hear some more parables just out of academic interest, I'll be happy to read them to you while sitting on your face."
Some of the more one-dimensional characters like Yvonne (sorry) and Karen (not sorry) would be significantly harder to write an arc for. But yeah, as the game currently stands, I agree Lily is the most two-dimensional, with Cobra coming a close second since she doesn't care about the organisation, and seems to actually support Ethan's goals so long as they don't directly interfere with her Quickenings.