I have posted the following feedback suggestion:
I would like to use the MMC Computer Management snap-in from my computer to manage other computers in my home. If I try to do this now, I just get "Access is denied". I have an administrator account on all the other machines with the same username and password as my primary machine. But of course, since this is not a domain, those are still considered different accounts.
It would be beneficial if WHS could make this possible. That way I could start/stop services, manage shares, etc. without interrupting whoever is using the other system. This would also allow some remote management of systems that don't support remote desktop such as XP Home, Vista Home Premium, etc.
Besides, my wife gets upset when I take away her session on her XP Media Center system with remote desktop 
If you agree, please vote at:
https://connect.microsoft.com/WindowsHomeServer/feedback/ViewFeedback.aspx?FeedbackID=262069