Item choosing
I think items are a key part in the game and they can be used in some sort of achivments and ranking:
Think of your items like cards in battle forge. you have lots of them and you choose only a part of them to the match.
In demigod you will have a lot of items and you will choose a deck of items to be with you every match and you can always edit it in your free time. Than, in the match, every time you choose items you will choose from 5 random items from your deck. this will add more depth to the match and will make the players more defferent in their play style.
Now, you dont have all the items to choose from when you first get the game and you earn them through the single player, multi player rank, achivments and maybe even through ester eggs.
The more rank you have, the more items you can select from. and to make it even more intresting the basic items do simple things like hp and damage and the later items from higher rank have special abilites like spells.
Plus sets of items that complete each other can also be great and make the player how own them can become even more special.