It’s hard to say what innovation Rpg Groups could most benefit from, mainly because most of the best ideas I’ve heard of are no longer innovations. Nevertheless, I really like the concept from the Apocalypse World games of having to create bonds (history or Hx in the game) between players. It’s something that went on before that game, but strong ties between the player characters only adds to the party cohesion. It helps explain why everyone is together and maybe adds a group dynamic of tension to the scene. It’s something that should be part of all games in one form or another.

However, that being said, there’s better and worse ways of implementing it. Having set questions or possible bonds helps make it easier than coming up with a bond, but I think the most fun way of setting up bonds that I have seen yet is using Fiasco playsets. It’s something I haven’t actually tried yet, but I am tempted to try out.