I know you really want a synthetic language. I appreciate that you've taken feedback from
last time and are trying to localise your language so it's no longer all-Matari. It so happens that you've chosen a localisation--especially further on in your write-up, where you refer to it as "sebiestor" rather than "Northern Region Sebiestor"--that would most likely affect a number of us with clans established in Mikramurka.
More to the point, from my perspective, the language you're devising is nothing like the elements we have in-game that are supposedly Sebiestor. Since you're describing it as a heritage language, I think it's valid to use the Sebiestor bynames offered in the character generator as a resource and comparison, and I've copied those below. Since you're saying it's a contributor to Modern Standard Matari it's at least interesting to compare it with the wider pool of Matari placenames (system names) and personal names (agent names) in EVE. Your language and these examples do not appear to come from the same language group. Look at the sounds and letters used in each: your "sh", "q", double vowels, apostrophes (for a glottal stop?), and pattern of ending words with vowels, versus Sebiestor's consonant clusters and pattern of ending words with consonants.
From what I can see in EVE,
"Matari" language is a Northern Germanic language akin to Old Norse that's been put through a gentle space warp, and from the name lists it appears that Sebiestor is the Matari language that's most like Old Norse. If you decided to adopt Icelandic-on-a-Latin-keyboard as the basis for Sebiestor I might even go with you on that. But not this.
(By the way, the construction "You I thank" is [object noun][subject noun][verb], not [noun][verb][adjective].)
Agalder
Aldard
Aldeland
Alduin
Aldurald
Alfrir
Algaert
Alland
Andrard
Anstian
Arbosa
Artrald
Askold
Askulf
Atavuli
Atruin
Auduin
Aumer
Austrene
Beldrulf
Bererund
Dadunur
Egdald
Eginald
Egivand
Egnald
Elongur
Eriker
Fidard
Gengod
Huren
Ituin
Jakuard
Joringer
Kanenald
Kaundur
Madeveda
Malukker
Mangeiri
Mernher
Midumulf
Naskingar
Olgidar
Ongrard
Ornulf
Oskold
Renalard
Ronuken
Sinulf
Sokarad