I'm using Start11 to get the vertical taskbar and, in general, it is working great!
I do have a question: The task bar in Windows 10 would put multiple system tray icons next to each other if the taskbar was wide enough. The wider the taskbar was, the more icons it would put side-by-side. The Start11 task bar is not doing that and so the icons are eating up more space in the task bar and leaving less space for the pinned and active applications.
Is there any work being done yet to implement multiple system tray icon stacking?
I have attached an image of my Start11 taskbar and my office PC Windows 10 taskbar showing the difference in the system tray portion of the task bar.

TrafficMonitor.exe, shown in the Windows 10 system tray, does not display at all in the Start11 system tray. It is a very handy tool and I hope will work in a future release of Start11. Information TrafficMonitor.exe can be found at:
https://sourceforge.net/projects/trafficmonitor.mirror/