It's already been reworked. It got new content in both 0.18 and 0.19, like the extended frame. It just didn't get as much as the D-Series or even Roamer did.
The Charro could do with a spare wheel cover. Something like this, adds a bit more character to the vehicle.
How about one with a Gavril logo on it? Like a big "G" or spelled out. The Hopper has a unique Spare tire cover.