Capping the class system could do wonders for the game, as it would keep fighters from getting absurdly strong and provide some motivation for players to take it slow. If you're still concerned about over-leveling, you could always revise the base stat totals for the classes. For example, if each class covered 3 points, the highest anyone could get would be 23 BST. Still difficult for a green-as-grass rookie, but generally manageable for classes B-D, especially if boosting items/beneficial arenas/creative strategies come into play. Naturally, you would need to iron out the trainer system to keep everyone from reaching class D within a month, but it might work with the right system. As for Zakaro's idea...it could definitely have some benefits. It would make level advancement more gratifying and give players a general outline of what they can and can not do, rather than leaving them to discover by trial-and-error like in the old coliseum. However, I am a bit concerned that it might squash creativity. There's a chance that players would assume that the listed examples are the only things they can do, or they might not want to try anything new for fear of it might be "too advanced" for their class.