I'd like to talk to Joerg once before the expedition ends, and doing it this week would be interesting (since we're talking to L-dawg at the same time, and also Ruprecht was just talking about how awesome he is), but it's not that big a deal.
Honestly, the main reason I think we should talk with Asarnil and Deathfang on separate weeks is that the last time we had a scene with both of them... it didn't really seem like we had much chance to talk to either of them directly. I'd really like to talk to Asarnil one on one, and the people talking about how cool Deathfang is seem like they want to talk to them one on one too.