The problem comes in that there wasn't a cohesive concept of reference requirement when this costume was approved. It is why the COTF Nihilus is actually an amalgamation of 3 almost completely different sources (box art, minifig, and 3.75" fig).
There's a line where it becomes logical (and practical) to update certain costumes for specific reference inclusion and exclusion, and where it becomes downright impossible. COTF Nihilus will pretty much never be capable of accuracy to any specific reference, but this one *might* be able to.
If you are wanting to look into the possibility of it, we can definitely pull together a think tank of the DL, XO, advisors, Det LMOs, and those wanting to be involved in this, but we need to be sure we want to go down that road before we start as we can't do half-assed CRL reformations.