I've been having some fun throwing these. I've gotten a good grasp on keeping wall thickness consistent, pretty much 1/8 to 1/4 thick all over.
The thing about this form that I like the most, and that I have continued to explore is the "swell" near the top. I like the tension that is created by having a base narrower than the tall belly. The thing I need to work on now is really pushing that to the limit and making the base even narrower. The problem is with such a tall and thin piece it can get unstable.