I tried Vanguard a few months, but it was the tutorial area. I know there is no PvP to keep me for the long run. I'm wondering how "smart" the AI is. I think back to GW1. The mobs there changed tactics throughout a fight, ran out of AoE, etc. The chance of failure on a quests was high (well to me at least). How comparable is the AI to this scenario? I'm thinking more of leveling up not so much the raids/dungeons.