the eredar dont have a "demon thirst" they also werent forced to join the legion they were asked and went willingly
Yes, they do.
We learn that in 5.1, in a warlock-only quest. The way the Burning Legion controls the "lesser demons" is because the demonic taint inflicts them with a BLood-Elf like desire for magic. Eredar are included in this.
That's probably why they so quickly turned on the non-eredar Draenei.
Definitely yes. Either that or make Belves a neutral race similar to Pandaren.
Right, as the world goes, is only in question between equals in power, while the strong do what they can and the weak suffer what they must.
There is a modern myth that people have always tended towards democracy, constitutions, electoral rights; but in truth, love of freedom has never been the predominant note of popular politics. At most times, popular demand has been for a strong government.
Anyone with common sense will say no. There's no point what so ever. They're no different to blood elves (game play wise) and even if you want to get screwy and technical with the lore they're the exiled 10% of a race that had 90% of it's population massacred, there's fucking none of them left worth mentioning other than the windrunners where would they get these "heroes" from? It's just the small minority of alliance fanboys that are still pissy that the horde got an elf race and haven't dropped it 5 years from BC.
They would make more sense as a sub-race, like Wildhammer Dwarves or Dragonmaw Orcs. Because when you get right down to it, elves are elves, and both sides already have elves. It's not enough to have a unique backstory - races need to have enough physical distinction to pick their silhouette out of a lineup, and the gamut of elf builds has already been run.