Option to make curves thicker for better rig interactivity

Hi! It would be great to have the option to adjust the curves display thickness so they are easier to see and select when used in a rig - at the moment they are very thin and hard to differentiate.

It is currently only possible to adjust all lines in the preferences, but that makes every line thick, even the workspace grid, which is very distracting

This could be a very effective little change for character animators, I have animated before with Cinema 4D and Maya and have always appreciated the clear visual with thicker curves/ controllers:

The example above is very exaggerated but you get the idea :)