Photoshop CC made a couple of changes to the 32 bit Merge to HDR Pro process that I think may be pretty advantageous to your workflow. Instead of pressing okay and receiving a 32 bit image in Photoshop after “Merge to HDR Pro” it now has you go straight into Adobe Camera Raw. It cuts out the middle man as we all pretty much brought that file into ACR anyway. It mitigates having to save the intermediary 32 bit file and manually bring it into ACR.
Due to these changes, I have modified my 32 bit workflow to accommodate the new process. Check it out if it is something that interests you. I know I was pretty stoked!