Undead Tactics

Its been a long time since we've evr talked abt the undead, one of the greatest races in warcraft. Lets look at the pros and cons of undead.
Pros
1)Undead are very adept at harvesting resources.(acolytes harvest gold with speed and ghouls bring back 20 lumber each time)
2)Undead can summon temporary troops at the cost of mana and corpses(skeleton warriors and skeleton mages)
3) undead hav towers that can deal damamge with slow properties and they also hav strong towers.(whch are also sources of food!)
4)the undead hav good offensive and defensive spells
5)they hav strong heros with powerful nuking spells
6)when expanding, undead players dont need to build a necroplis at the gold mine, rather, all that is needed is to haunt the gold mine.
Cons
1) Undead require blight to build
2)units are expensive
3)units hav low armor

oh...i hav t go for lunch now...so maybe later i'll continue...