I noticed the Doom suits wouldn't render correctly - after removing chunks of mods at a time I deduced it was Numina (Numina-1.16.4-2.0.6). Not sure if this would be a difficult fix/or if you'd have any intention of fixing for compatibility issues but it'd be cool/appreciated.

-Thanks for all of your work so far

The same thing also happens when using dragonsteel armor from Ice and Fire, which is a shame because I really like that armor (even if I have yet to progress far enough to craft it myself).

Edit: And now terrasteel armor too (Botania).

Same here. You could use cosmetic armor reworked to not look ugly, but if anything I would want the praetor suit to be what is shown.