With the introduction of luts in CS6, those's users who want to manage their logical/float colour space conversions themselves, could do so easier if they had the option to turn off Photoshops feature of remapping pixel values when going between 16bit>32bit & 32bit>16bit modes.
I agree that the '99%' artists who work in print or web need not to work at higher float bit depths that mimic reality, but for artists working in TV/Film/VR/Art Installation/Games etc. having Photoshop play ball with post 1998 colour pipelines would be advantageous..... i.e. having importable 3dluts is a great new feature.
If an artist wants to manage their own colour space conversions using luts, then why do they not have that option... Changing the profile to linear, when the image is not linear, so an artist can bypass 'a helpful feature' to go from 16bit>32bit is a questionable hack, and having to change the main color settings to linear incorrectly to go from 32bit>16bit is again a confusing workflow.