Sounds like a good idea. So good in fact that I was thinking of doing it myself, but I figured others would want to do it too, so I changed my mind. Besides, I like playing the good guy too much.
I like playing the good guy as well,even though for 2 seasons I played more of the anti hero but my character is still a good person, shes just like Exalt a little more then X-com.
Should be interesting. I plan to include an implication in my profile mentioning that my character caught the attention of Exalt and one of the reasons she was brought into X-COM was to keep her from being recruited by others. If we both get in, maybe that'll come into play.
I'd recommending modeling your character's action after the game's Exalt missions. Just like X-COM sends soldiers out undercover to steal info, maybe have your character do the same, blending in while secretly sending Exalt weapon blueprints and staff info. You could even have an instance were you send the plans to the holo-globe tracker, which would explain why the Exalt base has one just like it later in the game.