I'm just curious to know, do you guys think a skill tree for the alliance you're in would be a great idea ? (Ebonhearth Pact, Aldmeri Dominion and Daggerfall Covenant)

i voted no as i feel it would further anger the TES crowd. we dont need even more segregation in this game

Racials are enough. Balancing them is gonna be enough of a feat.

No, but out of curiosity, what would these skill lines include?

The alliance skill trees would have to be virtually the same for each faction or else it would cause problems/uproar amongst the player-base.

I was thinking, since nobody want a faction better than another, utility skills. Since the only skills we have from now are combat oriented. Some skill could be a teleport to one of the 3 main cities of the alliances (i know we've fast travel but it cost money), or help for thing like lockpicking, persuasion, intimidation etc.

My principal fear is that since the devs told us it was possible to buy all skills, thanks to skyshards, level ups and veteran point i think too, i'm scared that we'll eventually end up with all skills bought, and 114 skill points remain unused. And exept for buying skills, they didn't told us about any skill point sink.

Well always remember there are race specific skill line too, what your describing sounds along those lines rather than alliance specific

Nah, races skill lines are combat oriented, not utility.