Some thoughts:

1. Allow crafters to further refine finished items similar to how ARPGs work. E.g. You have a base sword, but through further synthesis you refine it to focus on various stats (attack/doubleattack/haste/regens/ability boosting/etc). This could even apply to PvE drops to give crafters some added value, and help players individualise play styles to a degree. Refining synths would be done through a quasi trade/crafting window.

2. Housing WILL stagnate after a time. Think back to housing orientated games like SWG, where you will literally see thousands of furnishings being sold at minimal price. I suggest adding FC forts/keeps in addition to houses, also some form of PvP or PvE castle sieges where resources/crafted items are continually destroyed.

3. Add jobs to DOH, but restrict us to just 1 or 2 professions after level 50.

4. Make raid drops "bind to FC"