Lack of information; impossible to answer.
Impossible to answer.
Yes. If you don't 'take advantage' of a common skill, you'll be 'gimped' or of lesser effectiveness, efficiency or worth. Ea. 'I can read, but I choose not to.' or 'I can use Attunements, but I choose not to.'
I suspect all professions to be too flexible.
No. Complexity is never a hindrance; accessibility and understanding often are. With the very slow progress they currently have planned, I expect the complexity to be easily handled.
At first we all thought "so few skills" when half of the skill bar is fixed by the weapons!
But if you take a closer look, the diversity and flexibility of the professions is much higher than in GW1.
And, since ArenaNet has no secondary profession to balance for all skills, the balancing should be easier, at least to reduce OP builds and combos.
Too few skills to me has little to do with the flexibility they give the classes. You could easily have every skill out there have 7 different functions and work differently under certain weather conditions and then only have 20 skills for each class. It'd still be few, but they'd be flexible anyways.
I think flexibility is less defined in how many skills you can bring (or how many of them have multiple functions), and more in how many ways you can use them.
A snare can be used defensively (to keep foes away), offensively (to keep your foe from running away or out of AoE's) or in other ways (to win a race).
Similarly, a wall of flame can be used to damage foes, to buff allies' projectiles, or to prevent foes from getting to you (else they take damage).
While GW1s "flexibility" allowed for a myrid of skill combinations and builds that delighted the tinkerer in some of us, it's stating the obvious to point out that this same aspect of the game made properly balancing PvP (and PvE for what that's worth) nearly impossible.
I think we should all be enthusiastic that ANet appears to have learned from these issues and is having some forethought this time around. No doubt that the new Classes will be more confined and focused than what we currently have in GW1 but don't forget that the level of flexibility we had generated Touch Rangers and Perma-Shadow Form Sins.....
How is that not several functions out of the same skills?
e.g. a ranger will shoot his Crossfire short bow skill through an Elementalists Flamewall.
Does the arrow "pick up" damage from the Flamewall and add it to its damage? Will it pick up the "burning" condition in addition to the "bleed" effect?