Why is Flash Pro not the preferred design tool for Flex ? Is/was there any point in Flash Catalyst?

o the real app. Gary McGhee @gazmcghee EmberJS/Flex/Ruby developer

Suggestion: Split Flex SDK into Flex-Core and Flex-More

In order to free up the Flex SDK to move forward, I'm thinking it would be advantageous to split the SDK into "Flex-Core" and "Flex-More" like Merb (a Ruby library that merged with Rails). This would mean that the compiler, standard libraries and core components could move forward in versions m