Precision for gizmo by distance from center and pivot (multiplier and magnet)

Right now, eg. when doing rotation, the distance for "handler" from center and pivot not have sense around radians angle or something like intuition suggesting. The idea is to:

• add multiplier as Precision for gizmo by distance from center and pivot
• scale for "handler" from center/pivot to end of line handler
• magnet handler to other object to more easy snap to some verts, edges or faces

There was similar idea around units on axes

• Snap cursor to the grid (modification: units + z axes) and follow with mouse (+shitf?)

I know about shift+ ctr+ etc.