I have the same request, the way my UI is setup is that the group window is at the bottom right and personal health in the top right. It would seriously mess up my UI layout and go against the way i setup every MMORPG
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On top of that even if the window is next to it i still would prefer it in the group window. So easy to just focus on the group window when healing that i've nearly ended up dead on plenty of occasions.
I have my group window 3 across and 2 down so have a spot left just for me
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