-Demons. Not only as playable race (plz gibe us sum hawt demonnettes!!!) but also npc and pets (Khornate doges) -Hellblades. Both sword and flyer.
Controllable Daemon engines like maulerfiends an forgefiends! those would prove most useful in siege battles and would be all around terrifying to go up against
Gonna be a lot already mentioned but! Daemons in one way shape or form, preferably playable. But perhaps a sorc can use them as pets? Or perhaps one can summon portals and let NPC daemons join the fray... ah so many dreams.. Bases slowly getting afflicted by the warp the longer Chaos holds them. Daemon engines, I mean c'mon, even Loyalists want this. How else can they feel bad ass fighting they're infinitely superior brothers? :3 Gifts of the Dark Gods, I want to alter my character based on what god I want him to represent. Or perhaps God based classes? Khorne Berserker, Noise Marines? (WUB WUB WUB)etc.
Titans on a Battlefield that have dimensions of a Cityplanet like Terra. Warmonger Titans that moves, it fires with the Hellstorm Cannons and my Team will get into the Titan to Stop the bloody Chaos Scum that captured this Titan from the Adeptus Mechanicus. Or We will get with our Squad into a Thunderhawk with our Ravenbikes, for a Dropdown on a Eldar Worldship to strike down all these Aspectwarriors of the Banshee's Shrine of Biel-Tan. But maybe we will get sometimes the Aspect of the Warpspiders of Eldar to drop out of the Warp right behind a Squad of Noise Marines of Chaos to strike down these Demons of Sound
Sorcery. I want to find that very special place and time... those very special ingredients... those precious drops of my enemy's blood... and then combine them into a grand ritual of Chaos that threatens to turn the tide of battle all the while the enemies are trying to storm my last fortress to stop me. I want to see Champions of Khorne conduct blood-magic. I want to see Sorcerers of Nurgle spread decay and pestilence. I want to see Sorcerers of Tzeentch weave convoluted plots that doom their enemies without firing a single shot. I want to see Sorcerers of Slaanesh ensnare the weak-minded with promises of glory and decadence. I want Chaos.
Properly fleshed out perks/horizontal progression that accurately reflects the 2 Legions that are typically not thrilled with Chaos 'gifts' and generally abhor Chaos worship.
