This is the only thing i miss from Vanilla, so i HIGHLY Disagree.
Freedom of choice
Guides is nice to have - and there will always be a best spec. - But in Vanilla you could tweak things that helped the way you played.
And no I wasnt just picking flowers or grinding Tyrshand elites - I played PvE / PvP in Vanilla and I was sword spec with sub stealth and as i remember it poisen bonus. - it was not the same spec as everybody else but i was Rank14 with full Dodgefang(bloodfang) that topped in both places(pve/pvp).
I know my wife miss the Vanilla talent three too and she played warlock.