Glad to see both of these issues getting a pseudo-fix; I hope they're made official sooner rather than later. Admittedly, I didn't see an assassin list at my old local gaming group, but there were a couple of Smite-spam armies. (Maybe GK's, TS and other special smite-heavy units/armies are looking at a points cost reduction in their future because of this, too... who can say?)
I'm sure if you're reading here, you saw the front page articles too, but just for the sake of completeness, [URL="https://www.warhammer-community.com/2017/12/15/the-future-of-faqs-and-chapter-approved-dec-15gw-homepage-post-2/"]here is the link[/URL] to the WHC post.
Now, on stream, I don't think anyone has tried gaming rules as they stand now (not that I can recall anyhow), but are you guys thinking of including one or both of these beta rules in streamed games?
EDIT: It seems that there's a 'confirmation' via the GW Facebook page that TS and other Tzeentch greeblies are getting a loophole or something to get around the Smite nerf. Hope it makes its way to GK's, Warlock Conclaves and whoever else needs it, too.