I think it should be illegal that while on the beta firmware, you can't sign up for the beta program. I wish I knew what samsung is using to determine eligibility for the banner to show up.
I'm on beta 2 now, so I'm ok, but I'd like to just get the update normally for the next beta or official whenever the next one drops.
Illegal might be a bit of a "strong" position. You should keep in mind that for those of us not in the Beta program, we are getting the Beta from methods that don't fall into their defect process. Meaning that we are installing the Beta in a way that isn't in line with the way firmware will be installed by the bulk of the population (That being OTA).
They have to limit the number of people allowed to sign up for Beta, usually having to do with the resources that they have allocated to this portion of the project. If they don't get enough people in the Beta, they'll open it again. (Although I might not expect it, although it could happen)
They don't care about our level of patience or lack of. They have a project plan to stick to and aren't going to modify it unless they aren't getting the level of participation they need. Also depending on the defects found and how efficiently they can close those defects, there is always a possibility that we don't see many more (IF any)