1 - Hall of the Novice would be a good place to add this. (and would SE please add tutorial quests related to mechanics markers while they're at it)

2 - The point of the cap is to get you to spend them not hoard them. While I agree the cap could be increased considering the amount of content that rewards Poetics now (can hit the cap very quickly), I think 4000 or 5000 would be sufficient.

3 - Has been brought up in the Markets subforum many times. The player base seems to be split so I doubt SE will make a change unless a clear majority expresses a desire for purchasing partial stacks.

4 - Drag and drop would be nice. I don't see them creating more tabs because every player would have something different in mind, and some players would want more space for some item types and less for others.

5 - They know. It's a technical problem they need to solve.

6 - This one I'll stay out of. While I enjoy glamour, I tend to limit myself to a few favorites instead of collecting everything.

7 - I agree with this if only for the reduction in armoury chest space needed. I only need one set for healers, one set for tanks, one set for phys ranged DPS and one set for caster DPS. Why do I need 2.5 sets (since scouting shares accessories with phys ranged) for melee DPS?

8 - Honestly, I'm happy it has a cast time. Occasionally I realize I hit the wrong destination so I can move to abort. It could be shorter, though.

9 - I think this is another "they know" but it's also going to be a major undertaking to fix.