Hmm. Imperial "Sike" terse and monosyllabic sounds kind of silly to me. I add a sorta... glottal stop I guess. Imperial Sa'ik with two syllables sounds much better to me.

I've always pronounced Cishaurim with a hard k. I figue; if they are the tribe of the Indara-Kishauri then Kishauri is the Kiannic root of Cishaurim. Whatever, I know nothing about Kianni/Sheyic linguistic translation conventions.

So it may be complete bunk.
I say Sarcellus with a soft s. Sarsellus(sic). In all my study of Roman history and interacting with the academia therein, I've never heard Marcus Claudius Marcellus pronounced; "Markellus."
It's only the c(s) k(s) and s(s) that really screw me up with this series. I can usually wrap my mouth around everything else.
Although for fuck's sake. The capital of Conriya. Aöknyssus. What. I just skip right over it every time. I have no idea.