Is there a forum for support of the Pro version?
Are Pro licences going to be extended to 1 year after the date that an useable veresion is available?
What is the development cycle expectations for Pro?
The cost of the 'Pro' veresion is an extremely high premium for software in this category. 3 months after release and the Windows veresion is still unusable (menu buttons non-existent, dialogue boxes only displaying 1/4 of the window, invisible numbers, etc.). At this point I would expect the release to be retracted and either refunds issued or licences extended until such time that the software is actually in a release candidate state.
Two features I would expect from this 'Pro' version: 90-95% polished UX/UI that has passed at least basic end user testing and run-time optimization including multi-threading for intensive opereations such as island detection, supports, slicing, etc.