Thanks for the overview(s)!
Austin Cawley-Edwards
1

According to https://stackoverflow.com/questions/2659952/maximum-length-of-http-get-request the common limit is between 2kb and 8kb which would be a very large query. In that case I would probably also support a more concise querying format (parameters that combine different parameters) since the client probably does not have to know about them all. The other option is a GraphQL style endpoint that allows to POST a query and get the result.