with rmtshare you can control the share and it's ACL's fully.
but, I don't like the idea of admin having rights specified in share ACL's.
admins have the rights already on the server and there is no reason for admins to access users homedrive via his/her share.

not reading all what you have talked with boys here but did read your question and yes, you don't need elevation (runas or any such thingie) to accomplish any of these tasks.
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