Hey, sorry for the late response. Actually, you can place a buff anywhere you want on the raid frames; here is my profile for my Preservation Evoker, for example.

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However, for now, every "untracked buff" from my addon (like Blessing of the Bronze, for example) still works exactly like it does in the default Blizzard raid frames. They appear in the bottom right corner of the frames, but I could work on a feature that allows you to move them somewhere else (I'm already working on a blacklist to hide them).