Indenting blocks of code at once would be useful.

Special whitespace characters that sneak in via clipboard result in phantom errors. Having a toggle to show markers in place of all whitespace characters would be good. Lots of editors have this feature.

Maybe swapping your editor with a complete third-party (e.g. as in vscode) would be a good idea - if that sounds doable (less maintenance on your part, and you stay up to date in trends).