Fun fact: Shortly after MS Teams launched I created an internal "reconstituted" desktop Teams client for myself and the poor souls in my org that had MS Teams thrust upon them. It extracted resources from the (unminified!) electron app as well the js and CSS files from their web version, then repackaged it again via electron, wrapping into a standalone executable. Think like a really complicated greasemonkey/tampermonkey script.

My fork at the time replaced their criminal white space use and offered a more compact and information dense alternative using CSS and JavaScript, injected all post rendering. Ah, the silly things one is capable when faced with a minor inconvenience and a wandering mind...