We've never done the pick-and-choose thing (e.g. you get all exporters bundled in the basic license, whereas many other companies charge you repeatedly for each), and similarly we just want to put everything in the one option.
Thanks for the above explanation!
Would you consider doing a different style of pick-and-choose, for different user bases?
For example, a "Tinkerers" package, with just the engine, upgrades, bug fixes, and a single exporter, for a lower subscription price? An "Independent" package, with all exporters, IAP, etc.? A "Studio" package, with the full monty? A "Classroom" package based on their specific needs?
The subscription model seems based on the revenue people generate; perhaps this can be expanded to include the different services people would use?
Upgrades can be offered, the way mobile phone companies make phone plans, for example (license upgrades for multiplayer, etc)