AMEN!!! I cringe when i see people braking through them. Wipe off your speed BEFORE you get to the turn, then lean and rail it. Takes a lil while to get well, but is quicker, and doesnt damage the turn.
I think they started that way, all those many years ago(i remember riding road gap/(cant remember signed name) 4+ years ago. They have just constantly been rebuilt. I think they do need rocks/timber, along with this mythical brown stuff called dirt. Im not sure if you have heard about it, but seems to be good for building.