A basic code editor vs just a textbox would be welcome for editing longer queries. And perhaps a preview would be cool too for the current template as you make changes or if it breaks.

Perhaps there is a way to improve the default CSS on the form fields, it is kind of clunky looking by default. I'd really love to just use my current themes CSS for the inputs for example without making changes. Perhaps adding themes for the default CSS like: "Material" "Modern" "Bootstrap" "Match the current theme"