(not the best english)
Now I got good idea. It is normal payload but is has 3 rounds in same area (like hydro <3). After blu has pushed cart to first, blu has to cap one of 3 control points. Capturing point opens specific route for the payload cart. If blu won that round, they have to choose between 2 control point that are uncapped which one they cap. And of course in third round they have only one control point left to cap.
I think my idea is even excellent because it comes easier and easier for red to defend control point after each round
Now I got good idea. It is normal payload but is has 3 rounds in same area (like hydro <3). After blu has pushed cart to first, blu has to cap one of 3 control points. Capturing point opens specific route for the payload cart. If blu won that round, they have to choose between 2 control point that are uncapped which one they cap. And of course in third round they have only one control point left to cap.
I think my idea is even excellent because it comes easier and easier for red to defend control point after each round