1. Show where you have died on a map. This can have a couple of benefits. There have been times when I die at an elite pack on a certain map, and since the map is so big I have to search around to find my body and kill the pack. This would also benefit party play as my friends can see where I have died and better prepare themselves for what lies in that area.
2. Carry over NV stacks between games. I like to farm by myself quite a bit and I find it very annoying to have to regain my five stacks to farm efficiently. I think this would encourage longer gameplay times because you won't have to keep starting from scratch to farm efficiently.
3. Make all four acts available in one game. I know this is a long shot, but It would be great to farm main bosses and having longer farming routes. It would make the game a lot more fun as we have more areas to explore as oppose to having to make a brand new game to go to a different act to farm.
Let me know what you guys think.