Hey, first time posting an add-on!
I created an add-on that puts the main target in the top center of the screen to make it easy to keep track of. For now all it does is track the main target, but eventually I will add sub-target support.
This is the first version so there aren't any commands, and most customization is done through settings.xml.
Finally I learned most of this through the wiki and examining other peoples code, so I'd like to thank Morath as much of what I figured out was in dissecting his add-on BarFiller.
You can find the add-on @ GitHub
For now it's somewhat basic, if you have any comments or suggestions please don't hesitate.
One final thing is there is a settings for changing the style of the bar to more smoothly lower in the settings.xml; by default it is set to simple mode so if you want to check it out change that setting. This was borrowed from Morath's animation code so props there.