Thought I would post something to get things started, and I think the combat system is prob the place the start. I think getting it as close to the old Nexus would be awesome. That said I thought I would make some notes about what I liked about that system.
- Being able to move within the rooms. It gave you the ability to kite or tank the mobs away from the healers.
- Time to react. This kind of goes along with 1, but the fairly slow paced combat gave time to consider your options.
- The stamina/health dynamic and vital strikes. As much as I hated dying to insane vital strikes, it made the game exciting, and it allowed for people decide if they wanted to risk fighting above their tier or stay safe and fight mobs they know they can survive a vital from. Created a risk versus reward scenario. Also the visual showing when you did take a vital strike was good for the healers so they could see they needed to spam some mend.
- The on-hit modifiers. A lot of other games if your crit, its just double damage, but the fact we had a double damage roll on hits as one modifier and THEN had a crit modifier that something like a 10x your normal damage allowed for some fun bail outs in some situations. And of course nothing beat a lethal on an Ancient Dragon