why do these things seem to be almost deliberately bad? they're overcosted and almost total jokes, they have no firepower at all and aren't particularly tough, either. imperial titans are almost without exception incredible, so why are nurgle titans and superheavies so bad? nurgle daemon engines are also totally anemic and also overcosted
look at this:
Plague Reaper WE 15cm 4+ 4+ 4+ Nurgling Swarm (base contact) (Assault Weapons), EA(+1) DC3, Fearless, Reinforced Armour.
3x Twin Heavy Bolter 30cm AP4+ Critical Hit Effect: Destroyed. Any units within 5cm of the model suffer a hit on a D6 roll of 6.
2x Las Cannon 45cm AT5+
Demolisher Cannon 30cm AP3+/AT4+, Ignore Cover
Pus Cannon 30cm 2BP
this thing is basically an imperial baneblade except it's flat WORSE and it's more expensive. the hell?
another example, repugnant titan:
Repugnant Titan WE 20cm 4+ 4+ 4+ Rot Mortar 60cm 3BP, FxF DC 7, Void Shields 4, Fearless, Reinforced Armour, Walker.
2x Putrifier Cannon 60cm 3x AP3+/AT5+
this thing is 625 points. for what? even for killing infantry it's not great, and for anything else it's a total joke. it's tough(er) but not nearly enough to justify it being the same cost as a reaver while losing like half the firepower but what is it even supposed to kill? for a massive activation disadvantage you take for this thing it's just pathetic. any equally costed imperial titan would smear this thing without even noticing it exists. any ork titan, for that matter. even infantry would likely push it over, the thing it's supposed to hunt!
another example, plague tower
here you have something that's just really weird: a transport that's not faster than infantry that's tough but without any firepower to speak of
or at least, none considering it's cost of 325 points.. without any of the infantry that it's going to transport.
it has a min barrage strength 4 60 CM weapon.. it's OK. i guess.
2 battle cannons.. i guess..
plague mortar: a 90 cm 3+ anti-infantry weapon
what the hell is this thing even supposed to accomplish? you can remove a single stand of infantry somewhere on the enemy side of the map with like 60% certainty (assuming it has no save, if it does the chance goes way down)
it's way more expensive than it has any right to be. no way this thing has ever once been used successfully, right?
i've just been over it and i can't think of any way to deploy this thing that would be of any use at all.
contagion towers are likewise kind of bad. either overcosted or undergunned
likewise the great unclean one seems really, really weak. it has no macro attack? what? it suffers from the same problem as the rest of the nurgle-aligned weapons: it has no punch at all, even if it should. if the nurgle philosophy is to make tough, enduring things that are still threatening all of these things are utter failures. there is no reason to ever take a great unclean one over another greater daemon, except for fluff reasons.
plaguebearers are alright, but plague zombies are useless except for third-turn objective contesting shenanigans. even for attacking near-defenseless things like artillery positions they're borderline useless. they simply don't cause enough damage to be threatening.
do you guys disagree or should these things be fixed? if things are supposed to be roughly as effective per-point as each other, disregarding factions, why are these things in particular so abysmal?
thoughts?
remember: papa nurgle loves you. overcosting all of his engines of death he worked so hard on makes him a sad panda

[spoiler] i'd totally be up for theorycrafting some new stats for these things by the way, if anyone's up for it [/spoiler]