I haven't posted for a while and thought maybe i could share an idea with you. Some may hate this concept but i thought it was kind of cool.
The PVP in diablo is sort of boring at this time, with no reward and the mechanics not optimised it feels (for me anyway) that it has fallen into the background of tasks to do while roaming sanctuary.
My proposal (not that the devs will see) is to take the idea of dark souls and place it into the world of D3 whereby we would have "leagues" (like path of exile for example) that contain different things to keep play styles fresh and exhilarating. We could have an "Invasion" league where players would speak to an NPC in town and it would transport you to a random game (invasion league games are always open) and you try and kill the host for mega rewards, and if the host kills you THEY would get mega rewards (so each party benefits). these could be league only legendaries, lots of gold (the entirety of their gold held maybe?) lots of xp or maybe materials for a different event much like the infernal machine. Imagine this concept in HC, your gameplay would be fueled by adrenaline as you would never know when the invader will strike!
Im not sure what you make of this but please drop me some feedback regardless.