Creating Visible Lines Between Locators

I am attempting to create visible guide lines between sets of locators for a rig script I am developing. However, I have no earthly idea how to do this short of creatings curve objects and parenting the CVs to the locators.

Anyone have any better ideas?

Yep, either scripting or this. Maybe instead of parenting you could constrain.

Howabout making 2, 0 radius bones parented to the locators (or sharing transform)

Have you tried Create>Measurement Tools>Distance Tool?

You could create an Annotation