The 36 character limit on event parameters is extremely limiting, to the point of making Firebase Analytics a non-starter for some of my clients. Ignoring all other use cases, search_term,
item_category, destination, and item_name, which are examples given in the docs, do not often fit in 36 characters. For publishers, article URL and article title also are often over 36 characters.
Jim
PS: Is there a public bug tracker for Firebase Analytics like there is for BigQuery?