I think minigames could be a fun side addition to the game when players have obviously done everything and want something new, or if people just want a break from the shooter rpg style but still want to play the game. What I'm thinking mainly of is small little arcade games in main areas where players can play a game in competition for the high score. so maybe a spin on the snake game, Tsi-Hu pacman, tic tac toe, even board games like a miniature version of crixia chess or checkers etc. these could be sweet life givers to in game towns if they were set up like arcade machines. OOOOOORRRR.... you could have a few arcade machines about the town, BUT you have to go out and explore the world and discover hidden games. so snake might be in a bandit camp, while Tsi-Hu pacman, might be a drop from a boss kaiju. Some could even be exclusive rewards for certain events or even supporting the game.