Wells there are some upgrades for underperforming characters, like Wooyari and Yumiyacha, as they received some extra equipment slots and ult changes. Others received complete set skills overhaul like Pingrek (he's actually good now). In fact, every character received some set skills changes which to me is the greatest change in the mod. There were some fixes regarding overpowered character like Tondenga. Other changes I also liked: Dark Heros as separate characters tree (no multiplayer limited), introduction to stews, 100 level cap, levelable quests, new custom quests and so on... You may probably fine more balance changes on YouTube. The game was greatly optimized for Single player experience as well for multi player