I'd like a Shadow Man Illusion Item quest line, or the Cunning Disguise AA for it. We've been begging for this for YEARS and you guys have been trolling the hell out of us for YEARS with it. Let us have it!
Other than that, more DPS AA. Maybe something that extends the duration of Blade Fury, or makes it proc more. And by more, i mean as soon as i hit auto attack it buffs me with it...
I'm definitely down with the Invis AA aura, that's a really cool idea. It would be cool to give groups SoS

or maybe even a group invis click like Rangers have.
I also like the Shadow Dance idea.
Make Thief's Eyes a persistent Aura effect...
Absorbing Agent AA click would be cool. That could replace our Thief's Eyes click if you make the Aura permanent.
Track. Let us have it. We're Scouts.. It only makes sense to have to track something to assassinate it. For the love of god, a BARD can track and we cant. How lame is that?