Thank you! You won't believe that I've been looking for just this tool for the last several months (I've been searching along the lines of "i3 status bar for gnome-shell" but was unsuccessful).
Using argos with zenity let you provide inputs from prompted dialog in gnome make it feels like professional taskbar item :) you may find it tricky to execute a function inside your argos script and i found a simple way to make it works is to call the script itself and provide arguments to it. I wrote it here in my blog if you want a quick example to get started .
