As I understand it, the WPMUDev Dashboard is required on any site where a WPMUDev plugin has been used - e.g. MarketPress.
I further understand that my membership gives me the right to use WPMUDev plugins when developing client sites, for unlimited sites.
The domain limitations for this required plugin would seem to force limits on how many sites I can deploy for clients.
Have I interpreted this correctly, and what happens at 21+ domains?