Dunno about you, but being able to be paid to fight for the other faction... nice.. [I'm talking about PvP merc mode ofc]who else feels this good really go alot further into inter faction coperation without diminishing the anti-faction sentiment..
it is also a bit ..or rather alot more realistic.. whiles I don't expect ALL blood elves to start fighting for the alliance, I do expect to see in particular a few number of Tauren and Blood elves more often than not taking a stand with the other faction..
but how can you make this a proper system without diminishing the faction identity..? We've always wanted to play our x race in the opposite faction, but we don't want to diminish the feel that there ares till clear racial lines and distinctions, and that would be the case if we just allowed everyone to do it.
What if pvp Merc got expanded, and you could actually play as your race in the other faction, but it was a very long winded thing, something like going through like ALL the zones again from level 1 through 100 on the opposite side, and only at the end of it would you as a Tauren be recognized as a member of the Alliance.
There would be a distinct racial based story for every race that is switching. You follow a race based path, and you must first have hit level 110 with your current faction. Obviously if you've helped kill the Lich King on the horde side, it's not going to happen again when you switch to alliance, until you've completed the switch the you can do those old raids with your character. But the story will focus on the journey of each race. Would perfect if it was timed with the next expansion after Legion, and with the introduction of sub-races. As sub races would probably tell a racial story.
This one would take each race, and yo uwill follow a fix story of how your hero has become dis-enfranchised with his faction either it would be a faction hate, or a hate for his own races action, or a deep love or respect for another race or individual like a lover or prominent hero of that race. or if they're really keen, you could actually choose which one, and each race would have a path in each of those section s you can pick and unlock..
you will likely focus on helping one race or several races.. or do it in groups so you go through each racial group... with mobs probably scaled to your level for faction crossover specific quests, but for normal quests of the opposite faction that you would be allowed to take, which is most quests apart from fixed key events like killing the lich king, those would be at the level of the area.