FANTASTIC FOUR
When a character possessing the Fantastic Four team ability is defeated, each friendly character using the Fantastic Four team ability can be healed of 1 damage. If all remaining characters using the team ability are defeated as part of the resolution of the same action, this team ability cannot be used.

Does this mean that when a wildcard using the Fantastic Four team ability is KOed, other characters using FF TA are not healed of 1 damage since the wildcard can only use but does not possess the FF TA?

I'm sure I'm late to the party on this one but I just noticed this.

Yup. Unfortunately, only the Marvel TAs which mirror DC TAs have been updated to not be screwy with WC rules.

well before BNS no they couldn't, after BNS yes they can again.

So we can reasonable expect Fantastic Four and other Marvel TAs to be updated to be wild card friendly in the upcoming FF reprint and corresponding Player's Guide?

We can hope.

As near as I can tell, FF is the only exception to the rule. All the other TAs were updated.