I’d be interested to see what you ended up doing with this. I haven’t bought the fantasy pitch here yet but I’d be buying it for Blitz Bowl if I did. I’m thinking of doing stands/full walls along the long side, then half walls along the short sides with a door in the middle where a dugout would be connected. Print up or paint some numbers onto one side of the stands for the scoring track. Having the stands on only two sides would make it easy to switch between the two types of pitches.