Though I'm new to this style of flying I'm still an old school glider guider and am really glad to see this thread get started. Though I'm just getting ready to start into XC I have to agree that having anything in a plane that will control the plane like the first four items on the list shouldn't be allowed unless in it's own class of competition. To me, a big part of the draw of this type of flying is the need for pilot skill to accomplish the tasks. Having something that will control the plane not only takes away from the needed skill set, but as stated before, it makes for the RC equivalent of an arms race. He with the most bucks wins. Allow anything that will only give the pilot information to work with but nothing that will fly the plane for him. Now if they come up with some way of tracking your plane at altitude for hours at a time without killing your neck I'd be all for!