Thanks for your thoughtful feedback, in this and other discussion threads. You are correct - Fusion is not (yet) as capable of a modeler as Inventor is. As a Technology Preview, the goal was to explore some different modeling workflows ( a blend of direct modeling and parametric modeling), and explore some user-interface ideas. So, to answer your question: yes it was intentional to release Fusion with less modeling functionality than Inventor has, in order to get feedback on these ideas. We hope to expand the modeling operations in future releases.
Jeff Strater (Fusion development team)
Jeff Strater
Engineering Director