Just my opinions and not really necessary, but I think you should make the Virus forest biomes just slightly rarer than they currently are, especially when you consider how dangerous a single forest is. I ran into two large Virus forests only about 700 to 900 blocks away from each other.
Even if NicoNiko is only distributing this mod, the suggestions could be translated and sent to ZWF-S, the mod's actual author. The only other suggestion I have is I'm finding the Virus Forests to be too large (around 3x) compared to vanilla and other modded-in biomes.
I think the Virus biomes are the perfect size. They're a spreading corruption, deep and dark and full of nasties, you don't want them to end up one or two chunks wide like a vanilla biome, do you?
But then I always loved Kaze no Tani no Naushika. That's why I want to custom-generate an almost-wholly-Virus world with no iron or diamond ores. Bug-tech would be the high-tech equipment, and humanity would be in a desperate fight for survival against the horrors of the Virus.
I love these mods! Thank you to ZWS-F for developing them and thank you to NicoNiko for sharing them here.
I use both APV and AI. The mobs are tough in APV and I love the diamond shears from AI.
I have a crash, it happens when using the diamond shears on a "shimmerleaf" from thaumcraft. A pair of shears must be used to harvest the plant itself, otherwise it drops quicksilver. I have tried with the diamond shears twice and the game crashed both times.