Mainly I wanted to get people's ideas on how to model a Tanith First and Only Regiment, but really I'd be interested to hear how anyone models their Guard in a non-cookie cutter way.
My main idea for Tanith infantry, apart from buying a bunch of metal blisters off ebay, was to combine Catachan legs with Cadian torsos and intermixing the arms, using Cadian arms for the smaller Ghosts and Catachan for the larger ones, then green stuffing around some wire mesh to make the camo cloaks.
Heads will be a bit difficult, seeing as there are references to them having and them not having helmets as part of their kit, so I guess another intermixing there as well.