As in a training room that we could use to help us tweak and battle test our heroes? I'm thinking even possibly with another guild member. I know a lot of us use expedition but that's pretty limited. Im not saying a room where you can fully customize an enemy line based on their pit/coliseum lines, but similar. Haven't worked out many of the kinks because that's your job. Personally I would like to see the results of my runes in action. I don't pour money into the game like I used to so I can't just five star runes everyday. Also if you can't see stats n such of a battle until it's fully done, so it'd help with that mainly. I see it as a good tool for everyone. It would help newer players learn their heroes better as well as aid people who write guides/help posts here. I'm pretty sure the idea isn't new bit still. I always find myself debating my options with many heroes, especially new ones.