XRAY - Model racing cars

I've seen several setups with the arms swept back. What's the Pro's and Con's?

In my opinion sweep mainly improves initial steering response, but doesn't seem to really have much of an effect after that. Adding sweep will make the front wheelbase slightly shorter. If you go out on the FF as most setup sheets show, it also makes the front of the car a little wider. These are very small changes, but good to keep in mind when making the change. You'll for sure need to reset your toe and camber. I would double check droop, ride height and steering throw just to be safe.