Drag scroll needs a sensitivity control

The drag scroll function hasn't been as useful as I'd like since it is set to scroll at the same speed as "edge of screen" scrolling.

Usually for edge of screen scrolling I use a very high sensitivity to quickly jump to spots ahead or behind.

When I saw it implemented, I intended to use the drag scroll function to scroll at a slower, more controlled pace.

To be honest, I hoped the scroll speed would be controlled based on how far I moved my mouse away from the drag start point. Farther = faster, closer = slower.

If it can't be that way, can we at least get to set the drag scroll speed separately from edge of screen scroll speed?