Lanefan
Victoria Rules
If the one PC ends up in effect dragging the others around to do this, then yes.To the participants. In this case, that would be @pemerton since we are talking about his preferences.
How about an example? Let's say that the PC is a fighter who is looking for his brother, who rumor has it joined some kind of cult and ran off. The fighter wanders the land trying to find a clue to his brother's whereabouts, so he can ultimately find and save him.
This is central to the character, right?
Is it central to play? That is the question. Is the game about what the player wants the game to be about?
Someone like @Lanefan might say absolutely not. He sees that kind of personal quest as being boring to everyone else at the table, and so it is self indulgent on the part of the player who'd like to see this play out.
But it'd be fairly trivial for me as GM, on seeing this, to drop occasional clues and hints about the brother, even if done in off-session emails or whatever, if needed; and eventually work in that some adventure where the party goes up against a cult for other reasons also ties into the lost-brother scenario (maybe the brother's one of the defenders the party are up against).
What I don't want to see is a series of sessions get bogged down by this one PC looking for his brother while everyone else does nothing; and IME that's often how these sort of things end up playing out.
Agreed. My preference, though, is that this as much as possible happen as a side effect of whatever the party as a whole is doing, if that makes sense.Does this mean that every single thing that happens in play needs to revolve around the missing brother? No, of course not. But for it to be meaningful (and I'd argue, objectively so), it has to matter more than the PC showing up in a new town, asking around about his brother, and being told "nope, never saw this kid around here" and then roleplaying sadness at the lack of news.
It has to matter to the unfolding fiction. A series of clues or sightings or rumors leading the PC on in his search, learning more and more until finally the situation boils to a head, and the brother is found, or the cult he joined is confronted, or what have you.
And if five or six PCs have similarly-personal yet disparate goals, trying to weave them together into something that can be more party-based can be a bear....even more so if any of those goals are in direct conflict with each other.