The problem with that, is all of the regiments would require different bodies, heads for those wearing hats/helmets, different arms to go with the torsos, at that point you're making an entire separate kit aside from maybe legs, but even that doesn't work as the krieg legs wouldn't match catachans, which wouldn't match cadians, and then boots of mordians, and so on. The grognards would lose their shit if they were told to stick a steel legion gas mask on a cadian body and be told "get fucked, here's your steel legion".GW could probably primaris-ify guard by printing generic bodies then adding unique add ons. All cadian bases, with like 6 different upgrade sprues. At the end of the day, the Imperial Guard is a military force. Seems kind of odd they have different uniforms for baseline units that arent in different roles. You could also easily slap on a gas mask and rebreather pack and call it a Krieger, or print sleeveless/torn sleeves and a bandana and call it a Catachan. If GW was feeling extra based they could sell the upgrade sprues as a seperate box, so you either build CHADians or fork up the dough. Ive heard Space Marines called the subscription service, but you could build a 2000 point SM list for ~$500 if you really get lucky and arent too picky. Guard is a certified mortgage payment if you want anything other than tanks.
Or, you know, they could ignore the Fudds of the Warhammer hobby. Whatever works.
Shit, there's so many regiments, I forgot Tallarn, Tanith, Elysians...
Ignoring the fudds of the hobby would be great, but it won't happen unfortunately.
