Query.wikidata.org should be a portal with different landing pages for different use cases and different target audiences.
Currently query.wikidata.org is a SPARQL editor with a lot of features that is mostly suitable for experienced users.

As a non experienced user when I go to query.wikidata.org I would like to see a landing page that shows me example queries and let me experiment with them without even seeing any technical technology like SPARQL.

As an experienced user I would like to have a landing page like query.wikidata.org/editor that directly gives me a SPARQL editor where I can start to type.