If I were calling the shots, I would definitely physically combine all the stations into one building, (economies of scale) which would at least allow for potential collaboration, at a minimum, with news resources.
That said, the other Sinclair FOX affiliated stations generally run much more editorially conservative leaning. How that translates to shared news resources between KOMO and KCPQ, remains to be seen. Ultimately they may choose to keep a certain level of editorial isolation. From an ad perspective, it gives Sinclair a much broader news reach and market advantage.