In cases we have had a last minute revision of one of the reference models if would be nice to be able to cancel or interrup existing synchronization job and do not wait until the previous one ends to start a new one.
Last minute changes are very usual and design is usually delivered/coordinated with tight deadlines so any cuts in time are always helpful.
Simply necessary, the sync is not functioning properly always. We, the users, need to be definitely independent while creating/deleting/cancelling connectors from sync.
Excellent Idea, I have waited more than 24hrs on occasions for a sync to stop
This would also be good when the sync has some kind of trouble. The other day i had to wait more than 24 hours until the sync got cancelled by Bentley staff.