I've been through many patent processes over the years (I have about 15 patents). The comment on obvious is valid, but it depends on the examiner you get. I've seen some really bad patents that should never have been issued, also some good ones that were blocked by examiners for stupid reasons. In any case you probably lost any opportunity to patent by publicly publishing it here. What many people actual get when they say they have a patent is a design patent rather than a utility patent. Design patents are easy as pie to get around. They just prevent someone from making something that looks like your product. By changing anything they are no longer constrained by your patent.
A utility patent on a pano head would probably have to focus on some specific detail, since the rest has been done and published, or obvious. It seems you could get a good utility patent on some innovative rotator, or bracket, or adjustment mechanism, or something like that. Just don't tell us about it before you file your provisional application.
Also, a patent costs $5,000-$10,000 (USD) typically before it's all done, and may take 2-5 years to complete. Make sure you really have something and you will get a return on that investment before making it.
There is a huge amount of work to produce a marketable product. The inventing and prototyping that you (or Dr. Sean) have done probably represents less than 5% of the work you would do to make this a commercial success, and by the time it's all done you may not be able to sell it for much less than similar heads that are already on the market.
I don't mean to be discouraging, but that's the truth. As an engineer and small business owner I often have people come to me with their idea they think is worth a million bucks, while not realizing that having the idea is only 5% of the effort required for commercial success.