Not spending spirit ore is something at least.
I made a buffer thinking that I could help my other toons, but it seemed to not really be the case with better buffs in things. Go figure though, it ended up being my fastest leveling toon.
I've been trying to find anything that shows what skills are unlocked in the Aden version so I can try to plan things out, but I haven't found anything. Not even on the actual Lineage 2 site.