It could spin around the cannon’s axis pretty easily, I imagine.
Also it would need to spin in layers because the outside would be moving a lot faster than the inside. For the size of it that actually probably wouldn’t matter all that much since the closer layers wouldn’t need to be inhabited by anyone but much more resilient droids.
One thing for sure is that even with such afancy technology they probably wouldn’t have directional floor gravity producers. The stacked version would then need to have gravity generators at the very bottom and it would get weaker as you go up which would be…strange.
Yea I wonder if that was ever addressed? I don’t remember the movies much and I never read the books but Vader must have seen, like, security footage or something and been like hey wait a fucking a second.