It would be nice if there will be a hotkey for adding links (ctrl + l, or something simillar). Adding links to other articles is a basic and common action, that is done dozens of times when creating an article. It will make creating and editing articles more convenient.
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Comment Actions
There is! Ctrl/cmd-K will insert a link.
See the full list at https://www.mediawiki.org/wiki/Special:MyLanguage/VisualEditor/Portal/Keyboard_shortcuts