I agree with the comment regarding a couple of custodes. That would be a fine addition. The banners are impressive, but unfortunately hidden. Great use of parts for the composition and I love the subdued OSL around the emperor's head and the other unfortunates incorporated into the throne. I just wish you had included a closeup of the emperor, I really want to try and identify what parts you used to make him. For all the wh40k history, there are few depictions of the emperor himself.
Great Diorama, this is actually the first time I see a model of the golden throne, unusual considerung it´s been part of the 40K Background since `87. Great Scene, both in Terms of painting and choice of parts. The freehand Banners n the sides are amazing; in fact it´s a shame they are "hidden" and not mounted on the front, where they would capture the eye immediately. A pair of adeptus custodes Standing guard next to the throne would have looked Greta by the way.