1. No more war/titan forging. If it must remain just make it +5 and/or a socket.
2. Add both JP & VP back into the game. If WQ remain just have them give JP rather than items. VP gear should be = to heroic raid gear.
3. Bring pvp gear vendors back. Equivalent to normal or heroic raid gear.
4. Get rid of lfr. Replace it with 10m dungeons that can be queued for. 6 5m and 2 10m dungeons at launch. Also less trash per dungeon.
5. No more keystones. Replace with M and M+1(M being more like what M+2 is now and M+1 being more like M+6 but with more emphasis on boss difficulty than tougher trash) at launch and make it possible to queue for with sufficient ilvl. Add one difficulty level per patch which drops loot equal to the newest normal raiding gear. No weekly caches.
bonus change: get rid of daze
You don't need to agree with them all. I know people tend to disagree about these things.