Hello,
I`ve got a coupe of handle related questions

1.Are the handle thickness and tolerance adjustable? I am asking because i think i saw a setting for it but can't find it now. I know older version were not capable.
2.Is translation, rotation and scaling done more often through the node editor than the viewport?
3.Can you axis lock besides middle mouse and drag the direction you need? Sometimes its difficult, to get the correct direction.

4.Can you change the MMB axis lock to another button apart from remapping your mouse?