Demigod Visual Differentiation
One thing I find missing from DG is that no matter what build you go there are no changes to the look of the DG. When you grab Ashkandor or any artifact you still look exactly the same. When you spend skill points there is no appearance change.
Basically some sort of differentiation is needed for the current and future DG's to give an idea as to what they are building, mainly because we cannot view what they are building. This at least will give some ability to react to the builds of other characters if you need to.
As with everything there is one exception to the rule and that is Rook whose Towers on top of him change depending on weaponry, but that is very minor and in his case obligatory. A bit more differentiation would go a long way to improving the depth of the game.