New Redemption Grab Bag now includes an assortment of 500 cards from five (5) different expansion sets. Available at Cactus website.
Rather than saying an extra character entering battle is banding, we say "banding" is a specific type of ability that allows an extra character into battle (along with add to battle). This will probably also make it less likely that new kids would think Discarding the bander would kick whomever he banded to out of battle for some reason (since it's being treated more as a way to get another character into battle than going into battle "with" another character). Please?
No it doesn't, actually. If the card says "add to battle" then that should be a whole separate ability than a card that says "band," and one should never become the other under any circumstances.
one of which is technically in the subset of the other
I think that about covers my position
I think the way you placed it is needlessly complicated, but it's functionally the same as what I want to see happen.
Perhaps "play" could be revisited now that we're getting rid of overlapping abilities? Just as abilities used to not convert if they could target a Hero, but now always convert unless they specifically target a Hero, could we not change "Play" to playing a card from hand, deck or Discard since Banding abilities only could play a card from hand and would be kept rigid under the new ability guidelines?