OK, what I would absolutely LOVE to see in the first expansion is a system like the LDON's in EQ1, with 1 exception. I would like to see them do-able with 1 person. Yup, solo adventures. I loved the story lines, and the fact that there was an actual reason for you to be there, even if it was a weak reason. However, I never got to do many, as trying to get a group for them was rather hard, and getting a GOOD group was near impossible.
And I would like to see healing spells for Pallies, also. Im level 18, and no healing spells. I have a lifetap spell, but no healing. Go figure... ;)