this is my one of my favorite mod in CoE 5. The units really gives different vibe than any other class and I enjoy playing as a monstorous insect here. Although some can be fix and add.
First, This class is heavily based on sacrifice resource. Gold can be expendable later on on late game but it is not very worth it and RNG lucky if you can spend it on wizard.

Second, Although this class is very powerful at the start, they don't have support unit to utilize and maximize the strenght of this class. I would suggest The insect can summon digger that help with production of gold and iron while the cult can help more ritual to help their insect god.

Lastly, This unit lack some of late game power. It would hard (maybe impossible) to beat other class due to all of them has late gameplay that can summon powerful unit to help with the conquest of elysium. IMO this class should have powerful summoning for the late game to compensate their lack of late game power.

I think thats all that can think of. Although very fun class it is still lack some areas. Even then I really like this mod and suggest everyone to try it too. Cheers