Phase changes in track view is more like a chemical laboratory, and I'm not a chemical. The track view is well-made.
The thing is...
It's sometimes necessary to make final changes on volume or phase or anything else. Because of imperfect recording or old sample library, destructive functions are not unnecessary.
What could we do with these old menu entries, which are clearly out of date?
You could improve them to work well in a destructive context, or you could take them out entirely. The non-destructive way of working will certainly remain the dominant way for most of us. (channel tools, bouncing etc., which is in certain circumstances more work than necessary)
As it is for now, it's a real headache, every time you open up the menu. And I do so, when the normalize function is needed.
Since the discussion goes wild, I made an update on the mockup to clear up my intention a little.
Btw.: I overlooked the fact that swap channels was also one of the options for this "minimonster" gain function.