if you buy the chastity cage and you haven't taken an oath of chastity she'll say something along the lines of "if you realize that all you're good for is taking it, come see me", but no matter what level of Anal Lover you're at the scene never progresses, is this a scene thats going to be expanded upon or am i missing something??

I believe this'll be fixed in the next public build; it was fixed in this patron build.  :D

yeah if what you want is to be dominated by the gadgeteer, then you don't have to buy the chastity cage, just walk around in circles and keep visiting her, after like 2 visits I think, she puts the chastity cage on you for fun, and then she puts a dildo up your ass I think. After visiting her more times she tells you something along the lines of "if you ever decide that's all you're good for, come see me." She is referring to getting dildos shoved up your butt, but yeah if you visit her again after she says that, she'll end up making you her pet and it's a game over