Sorry, but classes on Delteria isn't something new and exciting. Delteria used to be nothing but classes (probably before most current staff/players).
More levels and guild houses probably wouldn't help. Develop on the current content and expand. Just making a big friggen overworld is kind of useless. Everyone usually stays in one place after finishing quests. I suggest you guys scrap the current quests and develop new ones. Or continue with the current ones and add a story line possibly? Not sure.
Delteria is one of the first servers I played when I started like 5 years ago. I remember all the class npcs and noobies.. So fun.
Edit: I see you post above mine. You can ignore some of my post.