#gua'vesa

It would be neat.

The Markings on the front Guard vehicles.........

Same color scheme as Shadowsun’s forces............

Gua’Vesa???

The first are border territory. Near the Imperium you find it mostly similar to Imperial culture and uneasy. The T’au use Water Caste both to do limited trade with the Imperium and slowly bleed the Greater Good into the working class of these border territories. Humans who accept the GG are often moved out of this territory for their own protection. Most accept the GG or try to move deeper into Imperial Space lest they get caught up in a war. Areas are often impoverished because of the Imperial inefficiency, the Water Caste is trying to fix that. 

The second are either areas largely human with T’au and non-human auxiliary presence weak. These are often territories not near border that were accepted into the Greater Good with less issue. It is almost paradise by human standards. Access to ever expanding T’au tech, without the pressures of the Caste systems or the Imperial Jack Boot ever down on your head. No nobility, just democracy. Food is your standard Imperial stuff, though higher quality because of T’au tech and no nobility hoarding stuff.

The third are mix of T’au and Human cultures. Here, humans while not fully adopted the caste system, emulate it somewhat for ease of integration. You often find this near the border territories, recently assimilated places. Humans largely either contribute to science, war or bureaucracy. All ways on alert because of these territories often closeness to the Imperial border. Food is bland though will fill you up.

2 general types of Gua’vesa armed forces exist within the T’au Empire.

The first function more similar to the Imperial Guard, with some T’au upgrades such as marker lights and better guns. Mass infintry armed mostly with lasguns (with some spare Pulse weapons for those who have earned them), supported by captured Imperial Armor as well as Fire Caste and other Auxiliaries. Used as a main bulwark while Fire Caste act as a scalpel against enemy forces. Less human wave tactic, more gun lines with some terrifying tank/air support. 

Plenty of opportunity for drama and would be a nice change of pace from the Imperium being the default human focus.

You could contrast someone who was born into T’au culture vs one who grew up in the Imperium and is still adjusting to the Greater Good.

How religion works, it is canon that T’au respects religion, so how does the Emperor’s Cult function. Are there humans or other aliens who worship water downed versions of Chaos (in my HC yes).

Military tactics. Do humans still use old Imperial Guard tactics or have they evolved to accommodate the T’au technology and related things.

How humans and other races contribute to the Greater Good.

Make that my next project?

Black with red trim. Representing a Gua'Vesa tank?

Demoliter Cannon, multimelta sponsons, and a heavy bolter.