Editing Warhammer 40,000/8th Edition Tactics/Chaos Daemons (section)

===Pros===
*Armywide 5++ save so you don't care about AP. Tzeentch and Nurgle make your guys even tougher.
*Wide range of miniatures so painting never gets boring.
*Daemons and Thousand sons together is one of the best armies in the game right now, with some of the best untargetable characters hiding behind an obscenely tough swarm of troops.  
*Lots of different playstyles with 4 different gods, monsters, hordes, magic and so on. Probably even more mixing with CSM (Daemonkin) later on and therefore even more different units to use. 
*Build your army on the battlefield with summoning (but now in a very fucking crappy limited fashion)
*Possible charge after (now fucked up) summoning. With an instrument you'll get +1 to charge and therefore need an 8 (42% chance) - doable with CP re-rolls
*A LOT of psykers. Your daemon spells are meh and buffs are limited to daemons of the same god but you can spam Smite all over the place. Space Marines and other expensive armored units will hate you for that.
*Lots of units with FLY wording for disengage engage shenanigans or for charging those annoying DEldar fighters and bombers.
*Your Daemon Prince murdermachines can hide behind other troops.
*Your army is completely compatible with Age of Sigmar and The Horus Heresy. It's almost like having three armies for the price of one.