RangeBar addon?

I had another idea for an addon: a simple ‘range-to-target’ bar:

Not sure about the exact ranges – I’d need to check the RangeDisplay addon for that – but I think a small graphical indicator like this might be more useful to some people than a text-based one.

Edit

I looked at the Lua code for RangeDisplay. Good grief, that's an astonishing amount of work necessary just to display a simple range indicator.