If you check that you are a newbie, I think you can use brief mode once you hit level 30.

Have you looked at the helpfile 'help newbie2'? I think it has other areas to rank and explore. Off the top of my head, some other decent areas are ashes of nowhere, forest of nowhere (in the past), Balator orphanage, fields of Balator, the desert south of Hamsah (Araile), the crypts underneath Arkham (through the sewers), Voralian City, Tir Talath, orc keep southeast of Galadon, and Akan. Those are all areas decent to check out for levels 12-22 or so.