Simple inspection of selected pathways immediately rationalizes several important experimental observations like step microfaceting, step bunching or step amorphization under oxidative conditions in terms of only a few low-barrier collective processes. The facile nature of these step restructuring processes indicates that some degree of fluxionality could indeed also play a role at this nominally "hard" inorganic catalyst, with dynamic evolution of the catalyst surface able to take place on the same time scale as the catalytic reaction. As a result, different steps of the catalytic cycle may take place at different sites offered by the continuously evolving surface. Scrutiny of these propositions requires future work to also overcome the second methodological hurdle toward a comprehensive microkinetic modeling, namely to be able cope with a correspondingly large number of processes beyond the confines of a trivial crystalline lattice. En route to a fully automated generation of an (off-lattice) microkinetic model from a given list of elementary processes, a pragmatic intermediate step could be systematic coarse-graining approaches that classify the identified processes into a smaller number of qualitatively distinct process classes that can then be captured within manually established approximate models.