Oh, maybe I was being boneheaded. Already forgetting when the site update was. I had noticed because all my XP was "gone" on my one post in that thread, but it was all from the old boards. My bad. Sorry.
Is there any stance on the possibility of adding "Informative" and/or "Insightful" likes? Being left with only the generic "Like" reaction feels poorly suited to many instances of wanting to note a post as useful information.
It should be trivially possible to add them in the default XenForo configuration.