I absolutely LOVE Diane Duane's Vulcans and Rihannsu - but the Rihannsu are flatly contradicted by screen canon. Especially, by the Remans and "Nemesis".
Or... are they? What if the colony ships that left Vulcan were separated (something that Duane actually describes - as ships getting lost from the colonization fleet) and each set arrived in a different new home star system believing that they were the ones that survived? Each "the followers of S'task".
Each would have created a civilization based on the materials they collaboratively made during the long journey - a civilization that citizens of the other would have found at once strikingly different and eerily familiar.
It admittedly seems like a huge thing to leave out from being mentioned onscreen for the entire runs of several series that involved the Romulans - but then again, so did the Remans. And maybe it would explain another enigma - perhaps Hobus is the *home star* of the TNG Romulans, whereas Eisn was that for the Rihannsu?
Build it up, or tear it down. Like I said, I know it's silly.
But be kind, and bear in mind that we *are* talking about a universe where Hodgkin's Law of Parallel Planetary Development is a thing. 
Or... are they? What if the colony ships that left Vulcan were separated (something that Duane actually describes - as ships getting lost from the colonization fleet) and each set arrived in a different new home star system believing that they were the ones that survived? Each "the followers of S'task".
Each would have created a civilization based on the materials they collaboratively made during the long journey - a civilization that citizens of the other would have found at once strikingly different and eerily familiar.
It admittedly seems like a huge thing to leave out from being mentioned onscreen for the entire runs of several series that involved the Romulans - but then again, so did the Remans. And maybe it would explain another enigma - perhaps Hobus is the *home star* of the TNG Romulans, whereas Eisn was that for the Rihannsu?
Build it up, or tear it down. Like I said, I know it's silly.

