Features for new campaign missions

IF there are new campaign missions added, I think these additions should be made:
-Heroes for new campaign missions.
-Goblin Villain, rather than archer queen or barb king (Only meant for the campaign missions and not a possible hero for players to have).
-Clan Castles for new missions (It is considered to be the most important defense by many, so why not?)

Reasoning for these additions (mainly the goblin villain)
I know that people have requested for new missions on top of the current 50, but that is not what I'm suggesting. I also know that several people have suggested a goblin style hero, that is also not what I am suggesting (close, though). I think it makes sense to combine these 2 ideas. One of the most important defenses in the game at higher levels is the heroes, so why are they not incorporated into the goblin missions? It makes sense for supercell to add a hero, or a villain really, to the campaign missions because it adds a level of unpredictability. Now if anyone wants to 3-star one of the hardest single-player missions, they just watch Chief Pat do it on youtube. If there was a hero added, then it would be harder (still not impossible) for players to mimic other players' strategies. Random clan castle troops could also be added for this purpose, but that's a whole other thread. I don't know if supercell even plans on adding new campaign missions or if the idea has been ruled out, as I'm sure Goblin King has, but I am sure that incorporating a goblin villain into the single player missions would satisfy 2 demands, i.e. kill 2 birds with one stone. I do not think a goblin king should be a part of the game outside of this, but I would go as far as to say that a "Goblin Villain" could become the antagonist of the franchise. I have to say that if new missions are added to the game and there are no clan castles or heroes in them I will be very disappointed. The reason I play this game is to make my own strategies and find my own way of doing things. The single player missions now take away from that, because no one bothers to attempt them on there own anymore. This idea could restore an entire aspect of the game that no used to be the main objective. This is a picture I made for what it might look like (I took all the parts from other places).