Im gonna take
@Aeronx idea and twist it a little, wut about hire mercenaries that will follow you everywhere. U will be able to hire 3 diferent types of mercenaries ( similar to d3), example: tank, assassin and mage.
U will be able to hire them for 30min after the 30 minutes timer ends a window will pop asking if you want to renew the contract.
1.-mercenaries gold loot option
2.-each mercenary will have 1 special ability
3.-you can assign 1 item to your mercenary, so they can do more dmg or shield more.
4. An npc will sell the contracts
5.mercenaries will say random quotes to u while lvling.