What about the ability to create a "virtual" report suite by admins? This would be a segment of a real report suite and would allow admins to handle user management etc. the same way as for real suites and the user would easily access their slice of data.
e.g. you have a single suite for your site but this covers 5 countries who just care about their own stats. Creating 5 virtual suites and limit the users to it should ease their work.