It would be nice to have something for brewing into credos, because they're actually amazing as they are, but they're just so slow. My suggestion is to accelerate some fermentation times from the credo, make higher Q drinks, get more juice from items.
It's a long process, but a 10% upgrade on most of these things would be actually very much appreciated.
What I suggest is :
Requirements : Farmer + Cook + Lumberjack
Water used for wort and mead must : -10%
Quality of wort/juices/mead must : +10%
Speed up growing of juice trees and crops : 10% (apple, pear, grapes, hops)
More juice from fruits : +10%
Fermentation time : -10%