Great call on the detachment guys, not sure why I did not think of that. And it does give me the leeway to play with the list more as I am not required to have 3 groups of dragons. Going off of this, here is the variation I came up with:
Battalion Detachment:
HQ:
Fuegan
Warlock: Witchblade
Troops:
10x Guardian Defenders, Catapults
10x Guardian Defenders, Catapults
10x Guardian Defenders, Catapults
10x Guardian Defenders, Catapults
Dedicated Transports:
Wave Serpent: Shuriken Cannon, Twin-linked SC, Spirit Stones
Wave Serpent: Shuriken Cannon, Twin-linked SC, Spirit Stones
Wave Serpent: Shuriken Cannon, Twin-linked SC, Spirit Stones
Wave Serpent: Shuriken Cannon, Twin-linked SC, Spirit Stones
Elites:
5x Fire Dragons: Exarch, Firepike, Fusion guns
5x Fire Dragons: Exarch, Firepike, Fusion guns
Dedicated Transports:
Wave Serpent: Shuriken Cannon, Twin-linked SC, Spirit Stones, Vectored Engines
Flyer:
Hemlock Wraithfighter: 2 Heavy D-scythes
Hemlock Wraithfighter: 2 Heavy D-scythes
Total: 1964 pts
In this case, I worry somewhat about putting all my dragons in one serpent but from everything I hear and read about serpents, it should get them where they need to be. I have some more points to play with here in terms of adding wargear, heavy weapons, or adding vectored engines back onto the guardian's serpents.
Variation #2 involves staying at 3 guardian squads, downgrading fuegen to an autarch, and then seeing what I can do with the remaining points:
Battalion Detachment:
HQ:
Autarch: Powersword, Fusion Gun
Warlock: Witchblade
Troops:
10x Guardian Defenders, Catapults
10x Guardian Defenders, Catapults
10x Guardian Defenders, Catapults
Dedicated Transports:
Wave Serpent: Shuriken Cannon, Twin-linked SC, Spirit Stones
Wave Serpent: Shuriken Cannon, Twin-linked SC, Spirit Stones
Wave Serpent: Shuriken Cannon, Twin-linked SC, Spirit Stones
Elites:
5x Fire Dragons: Exarch, Firepike, Fusion guns
5x Fire Dragons: Exarch, Firepike, Fusion guns
Dedicated Transports:
Wave Serpent: Shuriken Cannon, Twin-linked SC, Spirit Stones, Vectored Engines
Flyer:
Hemlock Wraithfighter: 2 Heavy D-scythes
Hemlock Wraithfighter: 2 Heavy D-scythes
Heavy Support:
Nightspinner: CTM
Nightspinner: CTM
OR
2x Warwalker: Shuriken Cannon
2x Warwalker: Shuriken Cannon
Total: 1997 pts