This is it exactly.
Frankly, our burst damage should be much better than the Operative if we are in the Deception tree.
There is nothing we do that an Operative does not do better, they have better mitigation through medium armour, they deal more damage and it's Tech damage which bypasses armour, they have more range attacks and they have respectable heals.
This is not about people not knowing how to play a Rogue style Assassin, it's about how Bioware have balanced the classes, and it would seem that when compared to the Operative, they have made an error.
Further to that, the Marauder also gets a HIPS style stealth, more range closers, better mitigation through medium armour and damage shields and equivalent, if not better, damage.
We are entirely redundant unfortunately.