Actually excited for the HDR improvements!
I appreciate your patience!
HDR is a tricky space to execute. Even when it is "correct," it can still subjectively feel washed out, compared to an SDR image with an out-of-range gamut expansion that has become increasingly common as manufacturers try to get their image to "pop."
There was a lot of foundational visual technology we built as part of this effort that should, over the long term, benefit both SDR and HDR visuals. But for this initial release, we wanted to focus on providing a friendlier, more flexible HDR experience. Using DIM isn't very fun when HDR required exclusive fullscreen.