Alright, so an easy solution to this (working off of Satisiun said) is that you have an LS for the persistant group, within which you RP canon material throughout the storyline. Then you have non-LS interactions which involve those not necessarily at the same point in the story as you, and as such you should not discuss story events, but you can still interact as your character in order to RP with the broader RP community. It's clear that there's two distinct groups of RP, but as long as the RP in the LS stays in the LS, there should be no discernable difference to those not in the LS.
I guess it would be similar to having another layer on top of IC (maybe ICC for In Canon Character). If you think about it, you already interact on these different levels whenever you RP. You act as yourself in OOC, then (as on the main page under "Linkshells") there are levels ranging from light RP to heavy RP where a certain degree of OOC is permitted/expected of you. If there were a persistent canon rp group, they could just create a linkshell and keep canon RP scenes in the linkshell. This way there's really no harm done to those outside the canon group, and those in the canon group can either create a character to RP outside the canon group, or use the base personality traits of their character to RP outside of the canon group.
I guess it would be similar to having another layer on top of IC (maybe ICC for In Canon Character). If you think about it, you already interact on these different levels whenever you RP. You act as yourself in OOC, then (as on the main page under "Linkshells") there are levels ranging from light RP to heavy RP where a certain degree of OOC is permitted/expected of you. If there were a persistent canon rp group, they could just create a linkshell and keep canon RP scenes in the linkshell. This way there's really no harm done to those outside the canon group, and those in the canon group can either create a character to RP outside the canon group, or use the base personality traits of their character to RP outside of the canon group.
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