I think it would be cool to show more information on your current stats, especially things like health regen, where you could hover over your current health and it would tell you your regen per second.
also things like combat kings, and how they effect your armor/resistance, it would be really cool if you could hover over your armor and see you have X amount of extra armor from this combat king, and so on and so forth.
i have so many ideas how to make this game better lol i wouldnt even know where to start, everything from the game panel and maybe expanding that some more and make it easier to make items like telling you where you can find certain items.