1 - Finish Bard PrE's. Bards get no love, and are a rarer class than Cleric in my experience, but are incredibly fun to play. I love my Drow Spellsinger. Give my Spellsinger II at least, to tide me over until U7 and Spellsinger III
2 - Either finish Radiant Servant III, or release another Cleric PrE. Maybe War Priest or something, or one which gives them more offensive casting capability (particularly at the period between 6 and getting Blade Barrier).
3 - More spells. Not picky on who gets them. I just want to actually have options on spell choice with my Sorcerer or Cleric. Since arcanes got a few new spells, Divine should get a few new ones. Bards need some as well, since they only rarely get a normal arcane spell here and there.
4 - I'm not picky on content, but keep the quality up on it. I just managed to find time to run into one of the new quests, but it was greatly enjoyable. Listen to your other players, and put some content at level ranges that are currently weak. Levels 5-7 is currently overloaded with good stuff to the point that you'll miss most of it on you're way to level 8-9 unless you've TR'd. So no more content there for awhile, put it up higher.