It has been suggested that now that Helm's deep is out that the focus in development will be on upgrading and updating some of the older zones. The intention is to hold off on another major expansion in order to do this. How do you feel about waiting longer for new content if it means fixing a few more bugs and updating the old areas?
I prefer that they fix bugs, update and expand new areas, than add more areas and add more potential bugs. For those whom have seen the same environment over and over again, some change would be a welcome touch-up.
They definitely need to do a completely overhaul on all the other areas. New players experiencing them for the first time generally find them to be very "last-gen" and under whelming to continue playing for too long.
I want them to get all the zones available first and then upgrade the game forever (bug-fixes, new and upgraded mechanics).