We provide a full service to our SM clients: Setup, Hosting, Maintenance, Training, Support etc..
None of our clients are domain administrators since we do all the work for them and they do not wish to bothered with technical stuff anyhow.
Our clients (domains) range from a single user up to 20 users.
Meaning that for every domain we use at least one account to administrate that domain.
We therefore believe that 15-20% of our accounts are wasted on this.
Meaning that we pay 3 times (1X SmarterMail, 2X Cyren) for accounts which are actually dormant and only used once in awhile when a client needs a new account or some account updates.
I believe that there are many other SM Global Administrators out there are facing the same (pricey) issue and therefore suggest that an Domain Administrators should have a simplified interface as Global Administrators have and should not be counted as Accounts.