"is there any likelihood that 'management' will be willing to do anything to call for changes/improvements to the roundabout?"
More likely we'll be asked to take a different route, or consider dismounting rather than using the roundabout, bearing in mind some recent shenanigans with the entry door to the car park which cyclists must use to the exclusion of all others, but which got locked after a motorbike was stolen, and cyclists were told they had to come in the car entrance bit, creating conflict and, frankly, a dangerous situation.
Breath not being held.