I do the 3D mesh work on this Open bunker with 010 hex editor.
I have to re-write some templates and scripts but they allow me to do quick and direct edits that don't change the GR2 much at all. A quick CRC correction and it's done.
One thing 010 couldn't do is being coded into a future release after I requested it.
That addition will make it even easier to directly do what I want to do.