And first and foremost it should be other races that should get some more spotlight that'd cure their human homogenization syndrome. As divided as humans may be, the other races are still much more different.
-The Gnomes provide the research focus as well as the political goal of reclaiming Gnomeregan for good;
-Dwarves could offer a more deliberate approach (hulking down in fortresses, holding off chokepoints, prolonged sieges that try to wear the defenders down rather than trying to rush into a breach), political goal of strengthening their lands (particularly areas around Blackrock that was occupied by multiple hostile forces for a long time) as well as some internal politics of their own;
-Night Elves offer focus on Kalimdor rather than EK like most of Alliance, particularly pushing for not abandoning Kalimdor even if things go in a dire direction in there, plus their nature and Druidism theme;
-Void Elves focus on well, Void and maybe repeated attempts at trying to win Lor'themar over;
-High Elves could focus on dying off;
-Lightforged (and Exodar to a degree) Draenei could be the most anti-war group since they have Argus to rebuild;
-Highborne could try to adapt to modern magic and offer some mage focus in the Alliance.