Why do we not carry some of the large fuel tanks into low orbit to be used as part of ISS or the like? It would seem more economical than letting them burn up on reentry each time.
I put a wing on my own race car and lost 300-400 rpm at the end of the straights. I picked up 1 full second in lap times so I considered it to be of enough benefit to leave on. My cornering speeds were higher because of the increased down force.
Be aware that an increase in rear downforce should...