Personally I would like to see a gear similar to a Nerf gun. The purpose of this would be to allow players to shoot foam bullets at one another, in condos, and in plazas. This would just be a fun novelty item and a cool promotion for laser tag or any other upcoming Tower Unite shooter.
It would hopefully contain some spring loading sfx and a reload-able magazine of foam bullets. If possible it would be really cool if the foam bullets could stick to players and walls.
I feel like this would also give builders an opportunity to build arenas of their own which could be fun and expand the interactive possibilities for condos.