Hello,
As a fun painting and modelling project, I would like to work on a mono Slaanesh DP army in the future. So it’s also playable and semi-competitive, I want 2-3 Heldrakes, which of course offer more opportunities for modelling. I’m typically a strictly Imperial player though so I need some help with an all comers build. Keep in mind, I want it to be centerpiece Slaanesh model centric and I’m not averse to being as cheesy and competitive as possible as long as it follows this theme.

Chaos Marines Primary
HQ:
-DP Slaanesh- Wings, Armor, Psyker 2, the Black Mace
-DP Slaanesh- Wings, Armor, Psyker 2, Burning Brand
Troop:
-Cultist x10
-Cultist x10
Fast:
-Heldrake w/ Balflamer
-Heldrake w/ Balflamer

Chaos Daemons Ally
HQ:
-Keeper of Secrets, Exalted Reward, Psyker 1
Troops:
-Daemonettes x12w/ Allures
-Daemonettes x12w/ Allures
Heavy:
-DP Slaanesh- Wings, Armor, Psyker 2, Exalted Reward

Fortification
-Aegis Defense Line w/ Comms Relay

So I think the idea with this would be to keep the DP with Burning Brand in reserve with the Heldrakes, fly on turn 2 and burn everything. The other two DPs would support the Keeper of Secrets and Daemonettes who would move up through cover to take objectives and the Cultists would hold down the fort. Pretty straight forward.