I've never seen an expansion in any mmo that has a nearly 350 quest requirement before allowing access. Its almost always just a level cap requirement with a few small storyline quests to get people acclimated. Nevermind the barrier for people who would rather be crafting/gathering. Thats a prohibitive barrier for potential new players who might see all the cool stuff in the expansion adverts and want to join in. Nope. Do these 300 or so quests first.