Show Frame # on Keyframe dots in dopesheet/action editor

Whenever I move keyframes around in the action editor, i often try to go to that frame at which the keyframe is at, to double check if I actually put it exactly where I wanted.

But if every keyframe dot already showed the frame it's on (e.g. these circles say 46 because I moved them to frame 46), then I could be more efficient since i wouldn't have to check each and every keyframe I move. I would only move the ones that i want to micro-adjust.