Hoverballs are noobish, but they can also be very practical, as they are so far the best way to control a prop or group of props along the Y axis, without having to download a bunch of addons or being good at wire/E2. Here look at 2 videos I found that demonstrate what they can be good or bad for.
So what is the point of this thread? Just because somebody used hoverballs in a contraption doesn’t mean it sucks. Open your mind a bit, and realize that just because they’re good for noobs doesn’t mean they’re stupid.