I spent a moderate amount of time in Open Beta trying out pure caster combinations. After much experimentation and trying every permutation that was caster with healing, I landed on Justicar (Occultism, Vitalism and Defense). Necromancer was a close second but was trumped by being able more easily swap into Paladin.
Paladin is still my favorite so far. However, I might level caster since I always heal in groups and it would eliminate needing a second set of gear until I hit max level. At max I would only have to level one skill tree and I know where and how to obtain a full set to level 50 starter gear.
Beyond messing with classes, I was interested in how quickly I could acquire two farms and a house in my preferred zones. Even being on a high population server with queues during day one, by level 18 I had all three exactly where I wanted them. SAHWEET!
I think things will work out the same for launch given that I have a head-start. I know many alpha players skipped OB but then there were thousands of players who will be F2P only and unable to own propery. Crossing my fingers the odds remain in my favor. Getting property won't be the issue. It's more that I have my heart set of favorite settings.
Knowing the ropes, I also knew what crops to plant in order to quickly start earning gold. This was very helpful to advancing crafting and being able to afford to purchase the materials needed to build my house as soon as I had the gilda stars to acquire the design.
Head-start is a few days away and I can't wait. This video, done by another player, sums up part of my lovefest with AA - the world itself. The sense of wonder, exploration and joy of discovery is pure delight. No video can fully capture what it feels like to be, walk, glide and sail in these lucious landscapes but it comes close.