Since Adminer is not working (Problem with MySQL) there’s a need for another database tool.
Local’s competitor (the one with the elephant) includes phpMyAdmin. Many people are already familiar with it. And it does some things that Sequel Pro doesn’t do so easily, like whole database searches. It would be nice to see it in Local.
One way around this limitation is to install phpMyAdmin as a WordPress plugin. Someone has very nicely put phpMyAdmin into a plugin: https://wordpress.org/plugins/wp-phpmyadmin-extension/. Your mileage may vary, but it’s working in my development site.