I am surprised that this did not work well for you. Did you use bagged clay and tamp to compact or bricks? I use bricks bricks to build and repair mounds and batters boxes. While they do require some maintenance these areas wear extremely well and last many years. I would not use or expect good results from bagged clay for sliding areas - but I have never done one either way.
If I had a customer with enough money to want to improve lead off and sliding areas I would use mound bricks turned on edge as a first choice and laid flat as a second choice. I use the word bricks but I think the manufacturer calls them blocks. They are more or less the size of bricks.