Talked to Sideshow at SDCC '14 and here's what I learned about the Marvel figures:
-The Wolverine arms will be articulated. They're experimenting right now with them and working with their team and factories to test different sculpts and materials.
-Quite possible we'll also have an unmasked head and that Wolverine's mouth will be interchangeable with different expressions a la Batman.
-There's a lot of Marvel 1/6 out there, so they want to be a little more creative with their designs. DC has more of a classic look because there's not much 1/6 Classic DC looking figures out there.
-Any cigar smoking head sculpt or cigar accessory are a 'no-no'. Disney-owned Marvel doesn't want it. Even for an "adult" collectible? Strange but true.
-Punisher is next obviously. Disney/Marvel a little sensitive about firearms but they're letting it go. They want the guns NOT to be actual depictions of real 'on-the-shelf' guns, but hybrids of different models. So if you want your Punisher with a souped up M-4 Carbine, ACOG scope, Forward Grip, etc. , better find it from someone else. Still, goal is to make it look legit, nothing too fantastical.
-Wouldn't tell me anything about Spider-man, likely will be a body designed specifically for the character.
-Dr. Doom is obvious, Sideshow has been giving Doom love for years.