Personally, I'd like a mod to pause potions timer during cutscenes, conversations, etc.
I know there's already a mod to make potions last longer, but I don't like it: going from 10mn to 1 hour is a total imbalance, IMO. It doesn't just get you through the cutscene, it really ruins the point of having time-limited potion effects. I like the new potion system, the fact that you have to drink ahead of a big fight, etc.
It's just would be helpful if the timer wasn't still running during cutscenes, they're really nice, you shouldn't have to skip them. Anybody know how to do that?
EDIT: True, with the potion duration mod you can actually tweak to any duration, but still, that's not to my taste...
http://www.gog.com/en/forum/the_witcher_2/mod_potion_duration_extension/post23