Should I create one loopback driver for each "thing" I'm wanting it to
do?

Or is it best practice to make one loopback driver and have it do all
the things you want it to do?

I understand there may be cases where individual drivers are needed, but
if the changes should affect the same set of objects, is it good
practice to make one driver?

I also know there's a practical limit to how many drivers in a tree (or
is that driver set) for performance.

Thanks!