I would imagine that the hardest part would be getting a stable floor to work on. As it is mobile and the shape it is I presume your floor would be at the lower junction of the outer wall and base cone unless you plan to remove that. Walking around it would flex the floor and creat vibration and movement problems. Dobs are usually used outside an Observatory as you need low walls to reach lower atltitudes.
I could see one being converted easily to a proper Observatory but it would have to be 'de-wheeled' and 'de-coned' and mounted at a permanent site. ( Send one over, I got ideas !!
)
Can you elaborate a bit more on how you would do it please ? I might be completely off-track with my assumptions.