IT should just be another option for the -Type switch... there is already -Type Room and -Type Equipment, so there should be a -Type Shared. Room and Equipment mailboxes are just sub-types of Shared mailboxes. Also, not just the PowerShell, but fix the EAC to handle the proper mechanisms for new mailboxes with existing users for all mailbox types. You require an on-premises Exchange server to exist if you're doing directory synchronization, why not add the features that less skilled customers can benefit from?
IT should just be another option for the -Type switch... there is already -Type Room and -Type Equipment, so there should be a -Type Shared. Room and Equipment mailboxes are just sub-types of Shared mailboxes. Also, not just the PowerShell, but fix the EAC to handle the proper mechanisms for new mailboxes with existing users for all mailbox types. You require an on-premises Exchange server to exist if you're doing directory synchronization, why not add the features that less skilled customers can benefit from?