Originally Posted by
ChronoRogue
I agree that she can take powers without effectively doing much damage to the person she is borrowing from, it's why I compared the controlled version of the absorption to a blood draw. Those don't typically hurt... very much anyway.
But it can still exhaust and weaken the person if done for too long. Most of the time Rogue took powers in Legacy from teammates they were brief touches so if we take that in mind, it's different from how long she held Trance in the above example. I posted that panel to show that her abilities are still intertwined together (specifically the vitality drain and power mimicry) even at full control, unlike what I had assumed. I would argue she probably also does absorb memories as well, even if she does not consciously acknowledge them, because it's apart of how she forms the psychic copies in her head.
The power negation is really the only tricky part and probably the most inconsistent. Maybe we can think of it like a cup full of water, in this case the water being a persons abilities? If Rogue only borrows a small percentage, they'd still have access to most of their abilities, compared to if she took a big gulp of water where they would not be able to access their abilities? I am not sure myself, unfortunately Carey did not clarify this aspect of the transference. As always thinking up the theoretical ideas behind a power, is going to vary across writers and be up to interpretation a lot.