I would like to move less than 0.05 during Z-leveling

I calibrate the 3D print bed very frequently with the 25 point grid using the handset.
When adjusting the Z-axis manually in the last step, I almost always find that the minimum movement of 0.05 mm is too much for my liking.
Does it make sense to request an improvement for the handset to offer an additional option in the 0.01-0.03 mm range?
Is there a technical impediment to this?
Is there any other way to get smaller steps from the handset for leveling?
I’m being too punctilious and it is OK as it is ?

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