Actually, it has been confirmed (don't remember the plaace) 1. The whole of Gleinor is made of rune escence, guuthix said this apparently. 2. Gleinor has trade in the eastern lands, but due to events that icant remember, trade is now very low. Also, i believe they could do one of 2 things. -use an entirely new spellbook, new trees, basic items, summoning creatures, herbs/potions. -have a completely new game for this continent, utilising new skills, etc. u would however use the same login. I imagine ninja like magicks with tomes or kanji instead of runes etc..