It always irked me a great deal that I could "whip out my chemistry lab" in the middle of a sewer pipe and make just as good of potions as if I were sitting quietly in a nice warm, well-lit, dry guild hall. Your mod obviously does a lot to rectify that immersion breach.
However here is another point: Assuming I've loaded up my inventory with lots of ingredients, I can brew up literally hundreds if not thousands of little bottles of stuff IN THE BLINK OF AN EYE. Zero time passage with inventory open, including while performing alchemy.
Obviously in reality it would take some time. I don't know if there is any way that this could be effectively incorporated into the game, but it might be very neat if it could be
