No sniper rifles in game currently? No way... I figured you'd get at least something like a silenced sniper rifle...
Anyway, any new weapons and spy tech gadgets would be welcome, possibly WITH missions.
I'd also love to see a DLC training course where which randomizes the course every time :D you can test your skills. Hostage rescue, infiltration, assault, hack several terminals, etc. All sorts of things.
Even some 'spy training' type memory mini-games or something. LOADS of potential.