I’ve had several problems with roll analysis of V3.0.
First of all, right after converting, some images get a very stop blue cast, impossible to correct with the WB setting. The only way to get a correct conversion is to cancel roll analysis for the frame. This issue seems to occur with very dense negatives. (I kept the same setting while scanning the roll). Example with [top left]/without roll analysis [top right]:
Another issue, maybe related to roll analysis: after converting a whole roll, all images turned out fine. But after quitting/launching LR, as I open NLP on an image to edit, the converted image is very different from the preview (shadows are crushed most of the time). It can be approximately fixed with setting black clip to around -22 but it is still annoying. Example above: screenshots of the LR preview in the developing tab without [bottom left]/with opening NLP [bottom right]. This happened only with one roll.