I love small smart menu at the bottom of the both web and desktop app. I use to quick add task and track time (screenshot 2).
However, desktop app (I use linux) has an icon in system tray, but it's useless (screenshot 1).
I think it would be great, if that icon had similar functionality (like on screenshot 2). I.e. you push or hover on system tray icon, and some buttons for quick actions appear. Sometimes, you don't need to use the whole desktop application. For instance, if you go to lunch and need to pause your time tracking. In that case you even can have your desktop app minimized and use nice system tray icon instead.
Thank you in advance.