OK... unless I'm being really, really stupid, I honestly don't see how Supergirl's teleport punch is comparable to pre-patch Scorpion's at all.
From the video it looks like it'll be really easy to block on reaction if done without a specific purpose in mind (e.g. countering projectiles) From there it simply needs to be unsafe on block and immediately we have a fair and balanced move.
On a side note, I think January announcement of a release date is a decent bet. Then they can tie it all up with some cheesy 'new year, new ways of fighting' tagline, possibly using the 'fuck 2016' meme because why not?