I like the semi-circle gauges but I don't like that they all face the same way. It should be easy to "flip" a gauge so that instead of pointing right, it points left. I tried going into the gauge editor but I gave up because it looks like you have to completely redesign the gauge.
Seriously - the option should be to right-click on a gauge and select "Flip vertically". I don't understand why it's not that easy. Unless it is and I'm just not seeing the option.