Mouse gestures integrated in KDE are very useful! But it use not comfortable because user didn't see what he draw, so too hard to understand which gesture you try to reproduce.

Will be good to see current drawing gesture in screen when user try to reproduce it via color line (optionally enable/disable). We can do this like in "Mouse Mark" KDE Desktop effect.

Before KDE I active use mouse gestures in Firefox, that have many extensions for this and most of them draw the gesture on screen, here is examples:
https://addons.mozilla.org/ru/firefox/addon/firegestures/?src=search
https://addons.mozilla.org/ru/firefox/addon/all-in-one-gestures/?src=search
https://addons.mozilla.org/ru/firefox/addon/recognizeit/?src=search

Also Chromium browser have many gestures extensions with drawing too:
https://chrome.google.com/webstore/detail/gestures-for-google-chrom/jpkfjicglakibpenojifdiepckckakgk
https://chrome.google.com/webstore/detail/smooth-gestures/lfkgmnnajiljnolcgolmmgnecgldgeld

All of this extensions by default - draw current gesture on screen, and in options user can disable this.

Also will be good to see some popup that shows executed action name, like in this extension
https://chrome.google.com/webstore/detail/gestures-for-google-chrom/jpkfjicglakibpenojifdiepckckakgk

Can you add drawing mouse gestures feature into KDE hotkeys module or it must be in Desktop effects module like "Mouse Mark"?

Reproducible: Always