Well, most of us treat the Seeker tribe thing is that there are smaller sects of each tribe. So that no one is stepping on any toes or claiming to write lore for the tribe as a whole (or 'the remainder' as you put it). There are plenty of people playing that they are S tribe that AREN'T part of the established sect, but that doesn't mean you can write for them! I would encourage you to apply this to your own sect of the S tribe rather than 'the rest.'
That said, kudos on the research. I like the migratory influence leading to pilgrimages. At first I figured you'd go with the 'wanderer' aspect as far as migratory goes, like they lived 'on the road' all the time rather than established villages.
Some other things to think on as a RPer would maybe be how they handle 'outsiders' or how they interact with others (like the Limsa citizens) - do they go to the city often? Etc.
That said, kudos on the research. I like the migratory influence leading to pilgrimages. At first I figured you'd go with the 'wanderer' aspect as far as migratory goes, like they lived 'on the road' all the time rather than established villages.
Some other things to think on as a RPer would maybe be how they handle 'outsiders' or how they interact with others (like the Limsa citizens) - do they go to the city often? Etc.