they never themed entire showbuildings just the part that guests can see from inside the park lol. 360 builds only apply to attractions guests in the park can walk/ride a train around.
I really dont understand how people cant comprehend the difference between the 2 lol.
I do think there's a decent chance that the circle rocks have a bit more backside theming if only because it is right on the corner that will be approached by so many guests heading to both parks, and from that perspective is "front stage" facing. Perhaps only a certain % of the tops based on viewing angles, kinda like the tops of the various mountain peaks as seen from outside the park. The added height guests will have with the Eastern Gateway Bridge would only encourage a bit more themeing due to an additional elevated viewing angle. Time will tell.