The amount of attention and care that went into the user interface is mind-boggling. I love the (in hindsight obvious) trick of having a 2D value picker with the step size as a second dimension. This is notoriously difficult to get right, especially for creative software: sometimes a 0.001 difference changes everything in your scene, other times you need a 1000 step size to see any effect. Not forcing an opinion on "surely this will be enough granularity for everyone" is refreshing.
Thanks for the ton of OSS work that is going into this and keep it up!