In terms of LVVR, there is no standard in terms of configuration or set-up. As you mentioned, there are various views and fields of views that are obviously of interest. Within our study, we looked at four different configurations. It wasn't exhaustive, but they were experienced through Canadian railways, and even within those four installations the configurations were different.
Some of the things we look for include whether there's a view of the locomotive controls or perhaps a frontal view showing some of the interactions between the crew members. The study itself doesn't identify what is appropriate or what should be the case, but we tried to document some of the best practices.