Seriously, Rogue needs to gain some permanent offensive powers. Why not do it the old fashioned way?
Which Avenger's power should Rogue forcefully appropriate?
Ms. Marvel? There's no place like home.
She-Hulk? Kinda of redundant with Red She-Hulk around, but Frenzy has similar powers.
Moon Knight? There's already a lot of voices floating around in that mind.
Vote or be damned.