I think this is gained more-so through things like RK mishs and team instances at lower level through to tl5 where you more or less hit the tops of your nano toolkit and are looking to really advance your character to the next phase. RK mishs were a great learning pool,
-different types of mobs (previously ment ac holes and expecting certain tricks from them)
-multiple mob rooms (crowd control or careful pulling were exercised)
-boss mobs incase of team mishs (agg control, healing, and a bit of an extended fight if you were doing the mishs at or above your level)
-incase of team instances (totw/is) you need to learn your role in a dynamic team setting, I remember lots of MA requesting we slow down because they are not a doc :P
these are things many players don't encounter anymore, whens the last time you saw lft with more than 2-3 froobs lft for rk mishs.
So I don't really have a comment on any of this cause honestly I'm just waiting it out till they kill it, and that seems to keep coming closer by the day.