As much as I find the most recent lists entertaining, I get this feeling that the lists are missing something. I think it has to do with the Trygons. They can run off and do their thing, but by themselves. It might be worth while to get a Gargoyle/Shrike/Ravener brood for support with the Trygons.

The big thing about bugs is that you want to keep moving, and you want to hit like a ton of bricks. Synergy is your advantage. Then a trygon with a bunch of gargoyles slams into something, your opponents cry–especially if the swarmlord grants preferred enemy, or you get catalyst from a tervigon. Hammer of Wrath, even at str 3, is great for reducing your opponent's numbers, and the blinding venom is fantastic. That's 3 attacks each + a gun. Both units also get to re-roll charges.