I'm kind of fixated on Darrell now. I'm certain he's a Seeker, as pure a one as they come.

There are eight core encounter sets used in Dunwich. Return will have six, and two of them are for sure replacements for core sets (Ancient Evils => Resurgent Evils, Agents of Yog-Sothtoth => Yog-Sothoth's Emissaries. I just now noticed the announcement mentions the second one). One sounds like a Striking Fear replacement. Rats, Dark Cult, and Nightgaunts are in one scenario each and could be replaced by the new scenario cards. I think this is pretty likely.

I forgot to mention, the official announcement strongly suggests an Ancient Evils replacement. And a French site showed some of the dividers. Since that's closer to a leak, I'll link to my post on it here.

I have not heard, but I did speculate early on that the replacement sets may enable that. I don't think the number of announced encounter sets is quite enough to fulfill that, but it could be done other ways, such as replacing Locked Doors with scenario encounter cards.

How about Darrell for the Seeker? I mean, he's 100% a Seeker, right? And rooted in Arkham itself.

I'd expect at least one more male in the bunch. I think when we do get Norman, it will be in the same cycle as Carolyn, and they'll all be investigators who aren't as focused on the main class. Otherwise, you end up with a set that doesn't really have a Seeker or a Guardian.

I see it as a benefit of the upgrade.

I think it's a great how there's this hidden back story involving the Thralls that we don't really get into. The Return pack may give us more of the story (we have already seen at least one new Thrall that will be in the set).

Agreed. Truce.

Oh my goodness. I see four sections. The fourth is "Additional Restrictions". Restrictions in addition to the restrictions already given. Options are restrictions. You are restricted to certain cards. If your options are to drive in the two right hand lanes, you are restricted from driving in the left hand lanes (apologies for my US centric view on where you can drive).

Those are under a third section, "Additional Restrictions" (actually a fourth, including "Deck Size"). Which, incidentally, implies that the other sections are also restrictions, not just options and requirements. It comes down to this: Matt Newman has said how Carolyn works and how the Dunwich investigators work. They differ. Neither has been errata'ed yet, but the designer has expressed his intention. Anything else is a house rule. And at any rate, we have until at least January before we really have to concern ourselves with dual class cards, by which time there may be clarification and/or revision.

Yes, what is it that must be chosen? Where do you get "not more than one"? No, in fact, that section lists cards that are required to be in the investigator's deck. I didn't say that it does. As you say, it's obvious. I only restated the obvious.

That says that a card is chosen (i.e. from the pool of cards), not an option to apply to a card.

If we're going to go so deep into parsing the rules, none of that says that you choose which option a card applies to, only that any card you choose has to fit (at least) one. Nor does it say that it only applies to one ("among" doesn't have to mean "one and only one"). So what we can infer from the dual class cards as described is that a valid, chosen card fits all possible options. Nothing we've been told suggests otherwise, unless you interpret unaltered Carolyn as though she were altered Carolyn, which doesn't make sense.

If you have a Survivor/Rogue card in your deck, then you have a Rogue card in your deck, and so it counts toward the five non-Survivor cards. This is actually a case where "other" would not be correct. Without the corrected "other", Carolyn's rules read such that a Seeker card that heals horror counts toward her 15 Seekers. The "other" is what lets her take 15 Seekers in addition to any that heal horror. The Dunwich investigators get five off-class cards, period. It doesn't matter whether they are also on-class. If it has an off-class, it counts.