Tempo track: Fine adjustment of a point when dragging in the info line, please?

I’d like to be able to adjust the decimals field by clicking&dragging in Cubase’s tempo track (in the info line). I know I can zoom vertically and drag the point exactly where I want it, but this doesn’t give me visual feedback.

There’s no way to adjust the point by decimal values (except with the PLE*).
I’d love to be able to adjust the point just by dragging in the info line of the Tempo Track Editor (because this gives the user visual feedback).

*Project Logical Editor

Whether you select multiply (move the point up) or divide (down), the smallest increment is not constant…

Why don’t you include add & subtract operations here?