A very, very cool and powerful feature would be the possibility to launch sql-statements on Elastic like Oracle or MSSQL with --mode=sql and --sql-statement.
This should open no possibilities to check values from indices.
https://www.elastic.co/guide/en/elasticsearch/reference/current/sql-cli.html
https://www.elastic.co/guide/en/elasticsearch/reference/current/sql-rest-overview.html
