Objectively the best inhabitants of Collabris: The Dragonmen of Zir.
Arabic (Fremen) Dragonborn of the desert. Civilized, not nomadic…Capital city: Ziris, the Glass City, the Shining Star of the Sand. Literally made of stone and glass.
A democracy where only and all wizards can vote, the Grand Vizir is elected by the Council of Seven, the leading wizards from each school of magic.
The Glass City
This is my indulgence in calligraphic knotwork. It fails the simplicity test but as a symbol of the city I love it (I imagine the central tower is where the Council of Seven meet). It also doesn’t take much to turn this to a turn a cityscape into a dragon:
I couldn’t decide whether this should be simple or intricate so I’ve ended up with a bunch of ideas. They’re all based around symbols that have a rotational symmetry order of 10 (to represent the 5 chromatic and 5 metallic dragon colours).
The simplest example is a riff on the Seal of Solomon:
This also has the neat touch that it’s made of two five-sided figures interwoven: the chromatic and metallic joined in a single nation.
Taking that idea and ramping up the intricacy:
I quite like this mandala (to be honest I picture all of these getting used in one way or another!), you could emphasise the knotwork, or perhaps groups of dragons pick out one of the figures to highlight?
An alternate knotted figure:
Dragon scales are also a logical option:
Or more rounded scales with explicit motifs for the dragon types:
I’ve largely avoided colour in these designs. I picture the men of Zir using yellow (sand), white (glass) and red (fire) primarily but when you’re using 10 spoked figures the temptation is to try to include all the colours and metals which can end up looking disjointed.
The Council of Seven
Something simpler but following the symmettry and knotwork themes:
This was actually the first thing I ever did for Zir:
If you rotate it 180 you can see it’s a Z, an R, and the tittle from the i with an extra fork added to the Z to as a forked tongue or tail.
I quite like everything here! And I think you could combine pretty much any of them and they’d work together.