Playground's one fault

The playground events are really fun, but they have one massive problem that in my opinion causes me to loose a bit of interest in them… and that is the lack of Private Playground matches. If I want to play around with my friends and just do silly rules that we talk about like trucks verses Peel P50s, why cant we. I wish that we could, but for some dumb reason we cant and that frustrates me. I mean the maps and the game modes are all really fun, but when it is ruined by them not giving us the ability to play around the way we want to, that saddens me.