Probably yes about using kind 7 likes / dislikes. And a big fat yes to interpretation. I am increasingly thinking of NIP-77 as an idealization, with interpretation of proxy data into the idealized NIP-77 format as being a fundamentally important thing. Interpretation is done by the consumer, not the author of the primary data. It’s not far from what we do in real life!
Maybe around half of NIP-54 articles are given a category, something like that. Eventually you’ll be able to invent new contexts and categories without the need for a wiki author to publish one, but gotta start somewhere.
For a mute event in some context, I’m thinking I’d use NIP-77. But the beauty of interpretation is that if client A uses NIP-77 and client B uses an augmented kind 10000, the consumer can take data from both formats, interpret them into a common format, and pool them to create a larger dataset.