Answers from perspective of Balance sage
1. How do you think your Sage spec is perceived by other classes?
As a DoT Damage/Crowd Control class that can throw a bubble or heal in a pinch. Not considered competitive for damage.
2. How do you perceive your own spec?
I see the spec more as a crowd control type character and wish that the end ability was more control focused. The spec winds up with too many DoTs and the final ability doesn't appear worth it. Telekinetic Throw is so key to this spec that it does tend to crowd out my other abilities.