Looking through the list from a tournament perspective its interesting. There armies will invarably have suicide deep strikes, death strikes, maybe also spaceships and the like.
That makes stuff like the unshielded synapses a risky proposition. Equally however their is no infantry synapse, making an infantry swarm non viable.
It seems you have managed to get the list to be used with a variety of creatures rather than an extreme build as seen with other lists (all AV/all Inf armies for instance), stopped the nidzilla list from being quite so good. Whether or not having a gaunt horde is nessecery for the background or not I don't know, but it certainly doesn't look that possible. I guess players have to do the maths on wether to get the LV ravenors or cheap gaunts to saok up AP fire and a few av's to take the rest before the lv's get tagged.
It certainly grates against my very soul not to be able to make too many single type swarms (av/WE/inf)! Oh the powergamer in me just died a little

Though it would live on long enough to give an LV army a go.
The biggest popcorn swarm I can make (taking advantage of the synapse discount on the hive tyrant when part of a tyranid warrior group) seems to be 5 warriors + tyrant, 1 warriors, 8 lots of ravenors, 2 lots of lictors, 4 lots of stealers with 2 broodlords. 78 units don't seem like that much, especially when they are making relatively small formations. Alternatively could go for an av horde made up of 10 tyrants and 8 ravenors/carnifex (though looks pretty poor) with again the lictors and stealers. 16 activations which is the absolute limit, but most will just fold and seems an easy way to give away the BTS.
Nidzilla wise if you want to risk the dominatrix there is always, dominartrix, vituperator, tyrant, warriors, 2 gargoyles, trygon, 4 raveners, 2 hierodule, 2 lictors, 6 stealers, 1 brood, or dominartrix, vituperator, tyrant, warriors, 2 gargoyles, 4 raveners, 3 Trygon, 2 lictors 4 harridans, with the latter I think packing int he maximum WE possible in the list if you still want your lictors (and why not?).
Anyone tried any of the above style armies? And are Genestealers popular? Those things are roughriders on speed. The only reason I wouldn't take 6 broods is I want two lots of suicide lictors to kill the enemy SC/deathstrikes/similar. Extra activations, scouts, forward garrissons, yay.
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