Everyone sees something different in bonsai, so everyone will have a different opinion on what to do with pines. If you like root on rock best, then go for it! Someone else sees a sweeping tree battered by wind, or an informal tree with great nebari. Or a forest.
All are valid expressions of the art, if done well. So no one is really likely to come on and discuss whether your personal preferences are better or not.
Maybe you could do an article on how to do root over rock, or how best to keep them alive, or what trees work best in the species of pine? Or do an article on the various ways that pines look good on rocks....on the top, or nestled into a cavity, or on the side with its roots reaching around to hug the rock.
Looking forward to hearing more about this!
Joanie