I agree with all of what you say.
1) UA although it was a huge feat of power, Rogue vs the celestial, she should not have problems with psyques als, because she controlled her power there, and was selective, and ene sa fight she decided to take only powers not als psyques that's why The heroes were all depowered, but they were not unconscious.
2) She says clearly that absorbs all the personalities at once, then decided to leave all the powers and just stay with eld and teleportation is another thing, but it is clear that she merged and absorbed all their personalities at the same time.
What happened in UA does not make sense anywhere you look, she was selective, she did not have to have the mental problems caused by psyches.
Even so if you ignore that, it is one of the greatest examples of power that a hero has ever given, I absorb the powers of all the heroes of the planet, wow.
@xelossik: Rogue only absorbed a couple of hundred power and Psyches in Uncanny avengers. Also it was never the powers that overwhelmed Rogue but the Psyches. So the argument still remains it was inconsistent writing.
Here goes the image about the Voices overwhelming her not the powers.
During the X men legacy series she was connected to 1000's of personalities. Drawing on means using in this context.
During Uncanny avengers she only had a couple of hundred.
During X men she absorbed the Hetacomb and only truly went insane for a couple of seconds because she didn't get rid of the Hetacombs powers until Hope touched her and erased them. Even then it was the Hetacomb+88 Strain Virus that was messing her up.
Even then she wasn't screaming in pain like she was in uncanny avengers and the Hetacomb had 8 billion twisted minds. And during Uncanny avengers Rogue wasn't dying from a virus. Rogue handled absorbing 8 Billion minds better then she did a couple of hundred.