There has been a ton of complaining on this site since the game came out, but not a lot of CONSTRUCTIVE criticism...I thought it would be good for people to rank the issues that they would like fixed FIRST, and what is just a minor annoyance that you can live with....
I'll Start (1 being the highest priority)
1. UI lag is horrible
2. Market is too difficult to use
3. Chat is hard to use
4. Inventory organization improvements (sorting / extra bags)
5. Make macros easier to implement
6. Make it easier to equip / unequip gear (right click unequip maybe?)
7. Fighting lag is bad (I know if an attack hits or misses before the animation)
Hopefully SE will read this and will help them to prioritize how they fix this potentially awesome game.