I am developing a web application that currently has a pro plan for users. What could be the appropriate word for the next level plan? I do not want to use the word ultimate because the word can restrict potential expansion in the future.
Would it be acceptable to have the word "premium" as the first level status and "pro" as the next level? As a native speaker, do you find it awkward to have pro as the next level of premium?
The web service I am developing currently has a single plan named pro. The reason I named so is that the plan has all the essentials of the service and the next level plan will only add extra features to the existing service. The dilemma I have is that I can only implement the first level plan at current state. If I name it to something like basic with the next level in my mind, I suppose the sales will not be satisfying without actually having the next level plan. So I should name it to emphasize its essential nature but at the same time should consider the future adoption of the next level plan. That's the reason why I came up with the name 'pro' and now am asking which name might be suitable for the higher plan. Since I do not have to stick to the name 'pro' for the first level plan, any suggestions of the names that meet the relationship I described : essential - advanced will be much appreciated.