1. Agreed. Its basically an estimation of how much tp I think a party member will be using. When I'm with my static, I have a better feel for it, but in pugs its a shot in the dark.

2. That'd be nice too. For now I've just been throwing caution to the wind and allowing myself to be potentially hit by a lot of things in order to learn what perfect dodge works on. Notable moves: Homing missile in T8, Dodge bombs in T5, Meteor Stream in T9.

3. It's useful in lower level dungeons and PVP. Every class seems to have 1 ability or so that doesn't get much use at end game. Think of Monk's haymaker or Dragoon's feint.

4. Soloing mostly.