A bit of a hassle, but I've also been using it to learn more about how Armyforge is set up.
Theoretically it would even be possible to set it up so that each faction of Titan would be limited to their own weapons and the appropriate Undivided weapons, but it would mean listing each variation of Titan class and faction in the list of formations, so five Emperors, five Warlords etc.
For your batrep, your conclusions are pretty close to what I'd suspected - without the massed firepower of the EpicUK AMTL list they don't have as much firepower as expected, but excel in assaults.
For pure Nurgle it's slightly different as they've got some heavier firepower available (notably 60cm 12BP Disrupt available on the Emperor and 30cm 12BP IC Disrupt on pairs of Warhounds), but there's then the slowness and lack of Tripling to deal with...
When writing mono-faction lists, are you having trouble with the BTS? As the Chosen of Chaos upgrade isn't available on faction Titans, twin Reavers as a starting point automatically means two BTS formations, so it pushes you towards a Reaver and a Warlord.
Anyway, I hope to get a game in some time this month, probably using this 'go big or go home' list:
Ferals Plague Tower, 5 Activations + Daemon Pool
2995 POINTS
Chaos Feral Titans (NetEA v1.26)
CARRION LORD EMPEROR TITAN [1050]
(this will be using my massive oversize Plague Tower built from a Dystopian Wars mobile airstrip)Greater Daemon Possession, Faction: Nurgle (1 Head), Void Head (Undivided, Head), Heretek Shrine (Undivided, Carapace), 2 Rot Cannon (Nurgle, Arm or Carapace), 2 Support Heavy Plague Mortar (Nurgle, Arm or Carapace)
RAVAGER REAVER TITAN [600]
Faction: Nurgle (1 Head), Void Head (Undivided, Head), Rot Cannon (Nurgle, Arm or Carapace), Plague Flail (Nurgle, Arm), Corruption Cannon (Nurgle, Carapace)
FERAL WARHOUND TITAN [300]
Faction: Nurgle, 2 Feral Pus Cannon (Nurgle, Arm & Carapace)
FERAL WARHOUND TITAN PACK [550]
Faction: Nurgle, 4 Feral Pus Cannon (Nurgle, Arm & Carapace)
CHAOS KNIGHT [300]
3 Chaos Knights, Faction: Nurgle (Decayer Wardens)
DAEMON POOL [195]
13 Lesser Deamon