I made a forum for it, as a child of the Steem Developers Forum.
https://beta.chainbb.com/forum/steem-standards
Unfortunately this might be a situation where I need to bend the "first-tag only" rule to get other posts (like this one) to show up in that forum. Either that or we need to work on a tagging standard :)
RE: Proposal for reactions feature: separating structured user opinion (both positive and negative) from reward-modifying upvotes/downvotes