Just a few ideas in addition to new content that I personally would like to see, however many of you dont care what I want so feel free to post what you would also like in addition to new content.
1) Guild housing (I agree with kalari on this one)
2) Turbine points given to capped players in small incriments instead of XP once a toon is capped, say 5 TP per quest so that even when capped and rerunning quests there is some benefit.
3) Armor coloring/decoration (if we can dye hair then why not armor)
4) A third ring spot (with the new raid rings, it would be great if maybe for completely caped favor if you could get another ring slot to put something on your other 8 fingers)
5) The ability to assign specific metamagics such as extend to specific spells such as haste (I dont know that I need to extend all my buffs, all the time and I know I personally find it a pain to have to rehaste the group after inadvertently leaving extend off while casting it)
6) More chests like the skellie chest in the subterrane (I love that you can get several different named items out of that chest, I would love to see more chests with some of the better more sought after items in it)
7) A new level for all quests (call it extreme or whatnot) that makes the quest a level 18 or so difficulty with apropriate loot tables (I personally believe that DDOEU's biggest downfall is that unless you repeatedly run lowbies, there is so much content that doesnt get utilized enough. I think devil invasion in the marketplace is a fun quest and players of all level ranges can play it depending on thier current levels)
8) Change the eldritch/tempest/sov rune in the refuge in which if you insist on making it a lottery system at least give the players the option to keep the new rune effect or stay with what they had before they gave up GFL for lionheart that NOBODY wants. Also taking a peak at what people actually have on thier armors would give a better idea of what the players consider trash and what they really would like.
9) +3 unbound tomes.....where are they and why were they not included
10) Reevaluate favor rewards, some are great (agents of Argo, coin lords, house K are great) but some are trash. Especially now that drow and Favored soul can be bought, I think some new rewards are in order.