I'm very aware that with the current maps, and the flat terrain requirement in the current version, the maps look a lot like football fields. Hopefully we can add support for uneven terrain in the next patch, and get some more variety into the map cycle!
As a temporary fix, if players would like me to, I could make it possible for ball bounce to be disabled on a per map basis. The goal area will still need to be flat though, or else it will look like shit.