A few people looked at this thread but there were no responses so I'll bump it back up to the top
I just think it would be neat to not have to use the task bar to switch between the frontend and the external application. If a small utility (ie a hide button or minimize butoon) could be made to sit on top of the external app there would be no need for the task bar.
Not sure if this is doable or such an app already exists. Kind of like the D3 frontend with the hide button to the upper right.