A LOT of people have asked for Warcraft 4, and a LOT of people have said that isnt likely to happen while WoW is around.
My idea is this:
have entire quest chains/scenarios, where your put into a RTS style "minigame" (not so mini?)! basically, put Warcraft 4 INTO WoW!
This would be my dream come true. You would be able to give the RTS fans some love, you would be adding a MASSIVE new feature to WoW, have a new way to tell the storyline AND do all this without separating the community.
Suggestions: Well they keep trying to bring the WAR back into WARcraft, this would allow players to view and participate in large scale wars more easily.
People become very attached to their hero, and through out Warcraft games we have been in control of Heroes! so why not have OUR character as the "Leading hero" in at least some of the scenarios?
PVP - New Battleground TYPE - COMMANDER! Have a map with two bases on either side of the map, they start out with only a basic command structure. While the players fight it out for control of major points of the map, the "Commander" (have it as a seperate queue option) controls NPC's and can build up defenses/siege weapons for the other players to use etc and basic units to help out in the battleground (think it of like a more fleshed out version of how you could summon units in AV)
Scenarios - (THIS IS AN EXAMPLE OF WHAT COULD OF BEEN IN MoP! obviously the lore would of moved on by this point and it would be a different storyline) 5.1 gave us a massive war between the alliance and horde. Only we didnt REALLY see a lot of a war. We had dailies involving going and killing a few members of the opposite faction, destroy a building or two and kill a few "important" NPC's.
With this system you would be able to let us plan, and control a large epic war-zone, seeing many units slay each other, bases get built and destroyed and instead of having a quest telling us that resources are important for the faction, we would be actively trying to control and use the resources ourselves to SEE and BE the effect.
Quests - Control an elite group of soldiers, using tactics to place them around, either to control all of them in RTS, or just PLAN out their routes etc, while we then take back over our characters and fight with them (Think of it as a bit like the old Tom Clancy games where you would choose a route, weapon and tactics for your squad before taking part in the fights. Maybe even let us CHOOSE if we wanna do the whole thing in RTS or go back to controlling our character)
I know a lot of this isnt possible, and not everyone will even like the idea, but its just random ideas that was floating around in my head that I decided to share with the community, I would LOVE to hear other peoples ideas! (and no, I dont know if this is even remotely possible, it just sounds cool in my head!)