The problem with the player/group window is that a lot of its runtime logic is hardcoded by the game itself. You can't just put the player window elements in the group window and expect it to work. Some things will, but some things simply won't. (The detriment icons are pretty hit/miss, if I remember)
The best I've done is skin the player window to connect to the group window seemlessly. So while it looks like one window, it's still not.
The one I made years ago is for priests only, but it still suits my needs and is mostly scalable. Dunno if it suits your needs or personal tastes, since you seem to like Default. You'd need to turn off the default Cure Curse text macro as well.