I hope the Channel Mixer will stay. It’s a module that any other software I know uses. Renaming it would be strange and would certainly raise an eyebrow for anybody that uses any other photo editor.
A separate color calibration module would be great. I didn’t see any reference to any colorcheckers, hope the most basic ones will be included. Like in DaVinci Resolve (that is the free version). They have a preset matrix for 8 or so different colorcheckers (you can even use a cheap AliExpress one).
