It is, IMHO, critical to try understanding why imagery looked different, otherwise how are we expecting to address the problems properly?
Discounting system calibration issues, are they caused by perceptual effects, fundamental issues in the DRT or both?
Don’t get me wrong, I’m all for predictability here, but between colour appearance effects and observer metamerism alone we could be doing circles chasing our own tails for a while.
At any rate, the more information you can share with the group wrt issues you experienced, the better, otherwise we are left with “things looked different in HDR”. If you have an opportunity to reproduce them, please do, for the group, and ultimately, your studio.
This is a hard one, as you might have realised it, we do not have full understanding of how the HVS works, if so, we would not have those conversations in the first place. Expecting, that this group comes up with answers to all the questions is putting an unreasonable amount of pressure on it, especially when the research itself has not formulated proper solutions to some of the problems enumerated prior.
It is also why I’m always asking to describe the issues properly and within context so that we can design proper solutions within the constraints of our knowledge.