>>96334458
You bring up a decent point about "filling out the setting" with custom Chapters/Stormhosts, however I believe there's enough bits in there to really let you go wild. (Along with custom subfactions basically always being subject of being squatted, it's not AoS-Exclusive.) For example: A buddy of mine converted his Stormies into rangers; adding hoods/cloaks and pouches to every dude since they're expected to campaign for decades out in Ghyran without returning to Azyr.

Each host also has their own preferences to which chambers militant they employ as well (Hell it's stated outright that there are still chambers sealed/hidden that only Sigmar knows of) so the extent of what host has access to is entirely up to you. This also doesn't take into account what mortal stock is brought to /yourdudes/, as in my previous post it was pointed out that Sigmar likes keeping those of similar cultural backgrounds together.

Reforging *can* be viewed as rather pretentious, but it's an incredibly personal experience for every Stormie that goes through it. I'll probably have to post the snippet of the Reforging process from the Soulbound Champions of Order splatbook; since it adds a lot to how you can express the ravages of reforging (from mental instability, physical abnormalities, and also the issue of how long it'll take to actually get them back in fighting shape- Some souls take *years* to be put back in the armor.) through having internal brotherhoods from within the Stormhost that bond from similar flaws/attributes. (Y'know, like 99% of military structures IRL.)