add mini-game Nodes as Dimension items:

What I mean by this, is create a few unique interactive items, that trigger a mini game of some kind.

Some could be 2 player mulitplayer
and others can be 4 player multiplayer.

Could be a simple card game, to a Simon like game, to a Candy Crush kind of game, and even a Plants vs Zombie style game. Also a 2D Platformer game or something. Maybe a Pet battle game like Pokemon, or a 2d fighting game with sprites. Maybe even a Trove lite or something. Anything, just keep it fun.

this can really make Dimensions a cool hangout place.

Have a Scoreboard item that tracks scores and records for players of that dimension. Owners can hold contest and stuff like that.