Goblins: You can wear goblin armor :D I'd say no. There are too many logistical problems: Why would a vampire do a quest in which you kill vampires? Why would an elf have to "earn" entrance into the elven lands? How could a werewolf wear Bandos armor? How could a dwarf do certain agility obstacles? There would have to be a huge overhaul of quests, armors, weapons, foods, and more if this were to be made; this could possibly make the "new" RuneScape unrecognizable to the current version. Also, the ability to change races is a bad one (no offense intended). If you give werewolves +5 damage, every single pker will turn into a werewolf first. Access to race only areas would no longer be a unique aspect, for if one wished to enter them, they would change race to do so.