I'd like for Army to be different for each spec, once again making it viable! At the moment it's a minor dps increase and you basically have to glyph it so they don't taunt (haven't played in a while so maybe they don't anymore).
Maybe for Blood Dks - reduce the cooldown of blood pact by x seconds per ghoul hit, therefore letting you use death pact to sacrifice one or two if you need.
Frost - Ghouls attacks apply rime (or whatever: some increased frost dmg taken debuff)
Unholy - Ghoul attacks add a charge to Necrotic plague? or some other unholy themed ability.
Dunno I remember first using that ability during the first few days of Frozen Throne and thinking it was so awesome. Since this expansion Blizzard seems to be
specifically bringing the lore/fantasy back to each class/spec I think they should really revamp this move.