First of all it's free. Second the developer is passionate with it and provide fast responses in support requests. He gave me the feeling that he wants to see this extension growing.
And I strongly believe that this extension has plenty of room and chances to grow, as it opens a whole new world of possibilities for our beloved Joomla and the native article management.
Now in the usage, at first, it is not the easiest and most straight forward extension for beginners, but at the other hand with some efforts and research everyone can make use of it, even if he has to ask for help from the support.
There are several improvements or enhancements that can be implemented to this extension and all depends on the direction the developer will take for it.
Focus on making it a system for developers to deliver a custom ready to use CCK solution for their customers ?
Put more efforts to make it even easier with back-end creation of html templates output for the end-users?
Create patterns for integration of the custom fields, like the drop-down list, to get data from other extensions ?
In any case the possibilities are endless here...
Even it is still under development, I believe it needs the support and the attention by the community. Its functionality can be considered a must have or even be included in the core as it shows the potential to drive joomla to even higher flights.
Can't wait for the future...!