Not to hijack, but one of my dreams for the character was for her to included in Gambit's story. If you read his Asmus solo you know he's the head of the international thieves guild. But being that he earned the position via trial by fire, he was surrounded by people he didn't know or trust. I figured if the story we're developed he'd eventually form his own inner circle of friends and X-Men (who was familiar with) that had more dubious nature's and less of a role with the main teams characters like; Frenzy, Hellion and yes, Sage.
They always had a weird tension between them when Claremont wrote their interactions. When she jump started his powers, she seemed to enjoy it bit too much. There was that weird cover with him handing her a card and then when they briefly came together during the Xtreme X-Men (vol.2)/ Astonishing X-Men/ AoA crossover she flirted him in the middle of battle.
Sage is a character like Forge, Mr Nemesis, Cypher, and Cecelia Reyes. Even if she's not front and center she should always be around running logistics or some other type of support instead of giving utilized characters skills they don't need like instant computer hacking abilities.