I've always shown the Altmer love. They are the most powerful magical race. A Breton is easier to play because they didn't have the weaknesses that the Altmer did, but an Altmer was easily more powerful. When it comes to magic, a Breton is a handy rifle where an Altmer is a cannon made of glass. It's part of the tradeoff.
I've always seen the Mer races are a more extreme versions of the Man races, tending to be more powerful in some regards but weaker in others.
Altmer more powerful offensively in magic than Bretons, but weaker defensively.
Bosmer are more nimble than a Redguard, but are not nearly as good all-around because of close-quarter combat.
Orsimer are powerful than Nords, but again a Nord is more balanced.
Dunmer are more powerful than an Imperial, but generally have a piss poor attitude and nobody like them while an Imperial can talk his way through anything
And all of them love having cat-skin rugs and argonian hide boots.
Altmer are not like the Thalmor at all, that's an extremist group that took over the government in Summerset Isle and remade the Aldmeri Dominion (and they way they run the Aldmeri Dominion is an insult to the Aldmeri Dominion, past and present versions). Thalmor are complete asshats and Tamriel, and more importantly the Aldmeri Dominion, would be much better off without them...or at very least, not in power like they are now.
This is 100% true about the Thalmor, but let's not forget that Thalmor =/= Altmer. The Thalmor are an extremist political group that is in power, not a race like the Altmer or Bosmer nor are they a nation like the Aldmeri Dominion.