if you let others use the space via addon domains, their heavy use of their addon-domain-website could use up all the space/transfer allotment of the whole package, causing the whole group to be suspended for exceeding the allotment
In my multi-domain hosting subscription it is mentioned unlimited bandwidth, unlimited space. I want to just separate the domain for specific users. Does multi-domain hosting provides this separation that's the question.
I think you would be better served by a reseller account.