I think knowing where another PC makes camp would be a great idea. As mentioned before, they do indeed move around quite often, but if that PC stays near the Riverflower that should not be a problem. As Amunet mentioned she keeps her Pavilion near wherever the Riverflower may be, so a PC would notice her Pavilion when passing the Riverflower. Since the businesses typically do not change position often and stay in the wheel formation, no matter where they are. It makes sense, well, in my opinion.
I always thought of it as a Clan sticking together though not always close by they are still near the same vicinity. "so-and-so" Pavilion of the Amethyst Clan may prefer to stay close to the Guided Horse since that Pavilion is known for importing horses. Although in some cases a pavilion may not be close to their specific clan due to 'such-and-such' circumstance it would still be nice to see where other PC Pavilions are generally located.
Instead of saying "Caesi rode up to the Starguide Pavilion." It could give that sentence more detail and a better understanding as to exactly where the Starguide Pavilion typically resides. Or if someone is trying to give direction to a PC as to where this certain Pavilion is located, instead of making it vague, you could actually describe the general location of said Pavilion. I have made a few threads using NPCs to teach Caesi different skills and the location had been so vague and confusing lol.
So I am excited to see this map! I think it would add a better sense of community for the players!