I love hearing about unique takes on game mechanics. Someone recently convinced me that limited inventories are kind of abused currently and that unlimited inventory systems would give more player choices.
Gathering mechanics in rpgs. It's a waste of time neuron activator. I want to get immersed in the world and not walk from bush to bush going grabbing flowers, rocks and sticks.
As an old school runescape player I actually like grinding up my levels for no other reason than making the numbers go up. Something about grinding in that game feels right.