Ok... you'll have to pardon my ignorance here, but if I ask my server admins to create a domain account named sapadm, I'm afraid they'll come back and ask what the difference is if we create a new one called sapadm or use an existing domain service account that is used to run Tomcat, SIA, etc?
Or are you really advising that the domain service account for the SAPHostAgent should be named sapadm?
Either way it sounds like I will have to reinstall on all of the hosts as they do not want to grant these services to a local user.