I once saw an epic diorama at GW Manchester that was based on a 6″ square. It showed a titan pushing it’s way through a ruined skyscraper, with spez murrins swarming all over it, the rubble, the buildings exposed floors. I’m sure there were APCs and dreadnoughts in there too.
I liked the vertical nature of it. It was pretty impressive!
So, don’t do that. It’s been done. OMG, get yer own idea AB!
An RDF assault on part of a junkers compound or a BPI installation might be pretty cool?