It wasn't just you, somebody at Marvel comics apparently thought so too!
As for the idea that Obi-Wan and Vader are Jekyll and Hyde, that would indeed be a plot twist! He's the GM and the kid who organized the game! The Narrator was Kaiser Soze, all along!
Loretome obviously sounds like a big book ("tome"), but in my de-magicified version it's more like an ancient and giant computer, filling whole rooms, staffed by teams of monks. An elaborate calculation device for making predictions and solving problems, that Mentor consults in his endless analysis of the enemy. But I imagine in these centuries, Zargon has constructed his own "tome" and makes his own evil calculations. Or maybe, true to Chaos, he acts less calculatingly, but I think deep down he still plans, schemes, and crunches the occasional number.
The "extra skeletons" and "extra goblins" to me are just throwing in some variants (shield and helmet; wolverine claws). If "unlocked" (they get enough $$$) those would be included with the Expansions anyway. Does that mean after the fundraiser ends nobody can get them anymore (except from scalpers on ebay)? Who knows.
As for the number of figures, its exactly the same #'s as the original sets (so new GS will have 4 skeletons, new ROTWL will add 8 more). The "extra" figures (gender swapped heroes, special characters, variant mooks) go to those who "pledge" on the kickstarter (some for the $100 people, more for the $150 people). Those who "pledge" on the higher tier to get the expansions get the "extra" figures beyond that, if they raise enough funds for those. That's the story anyway...
So yeah, at most you could get 14 skeletons, two of them just being the new "more armored" variation. And double the goblins, plus 2 more with the claw variant pair, assuming we reach that goal.