Very cool and relatable I faced a similar issue for my content categorization engine for local events: http://drophere.co/presence/where (code: https://github.com/itissid/drop_webdemo). Finding the right category for a local event is difficult, an event could be "Outdoorsy" but also "Family Fun" and "Urban Exploration".

Initially I generated categories by asking an LLM with a long prompt(https://github.com/itissid/Drop-PoT/blob/main/src/drop_backe...) But I like your idea better!

My next iteration to solve this problem – I never got to it – was gonna be to generate the most appropriate categories based on user's personal interest, weather, time of day and non PII data and fine-tune a retrieval and a ranking engine to generate categories for each content piece personalized to them.