I was just reminded about how in the OG PSO there were a few alternate lobbies like how the Challenge or PVP lobbies look, but instead of a new play mode we have just a different lobby design/layout like how PSO2 used to look back in the day see here
And maybe also do a soccer field for a few blocks, or a race track with Rideroid or AIMs to race around in.
Give the lobby Warriors a change of scenery lol