If rotations (hence "playstyle") mirrored what the concepts describe, i don't think many rogues would be complaining.
At the moment, every rogue with every spec is:
- spamming SS/BS/Mut
- keeping up SnD/Rupture
- throwing Envenom/Eviscerate
As you can see, the actual things we do are nothing compared to the spec concepts.
Where is the poison flavour of Assassination? Where is the toe-to-toe and dodgy concept of combat? Where is the "leap from the shadows" thing of subtlety?
Changing a move damage type doesn't count much. Combat is making people use multi-press macros to deliver the damage it can, because doing it without will cause you carpal tunnel or such.
As the rogue community is saying from MoP beta, damage is fine, the class base model is good, give use the flavour other classes have - like mages with different spell schools, warlocks with different resources and such.