Speaking of bundles, Firaxis released the
Civilization V: Gold Edition last week, replacing the previous Game of the Year bundle. This new package includes the base game, Gods & Kings, and all of the current Civilization, Scenario, and Map Packs. I expect new players interested in G&K to buy this version of the game going forward it's the version on store shelves now.
The previous Game of the Year bundle, released 18 months ago, included everything except Korea and Wonders of the Ancient World. I know a lot of G&K players upgraded from that bundle and have trouble with those two DLCs. This should be less of a problem in the future, as Steam now offers the Gold Edition upgrade for US$20, which is cheaper than buying the expansion separately.
At this point, there are two main reasons why you wouldn't own all the DLC: You bought GOTY+G&K before the Gold Edition, or you've been buying everything separately from the beginning and skipped some things. In both cases, you may need to purchase Civ Packs to complete the VVV League of Nations; the Wonders Scenario Pack is allowed but not required for anything. In the latter case, I don't think it's unreasonable to require the Explorer's Map Pack for the VVV Map Quest.
I realize that it's uncool to ask people to buy stuff they don't otherwise want just so they can finish VVV. It's also uncool to change the rules on people who have already finished VVV, like xger. I honestly feel bad about that, but I still back what I said earlier: I think think the HOF should support the entire official product, and the Explorer's Map Pack comes in the box. In fact, it was already in the box (GOTY) when the Hall of Fame started accepting G&K+DLC, and it's unfortunate that the HOF organizers didn't know about it sooner.