I personally don't think the Novax needs to be changed, but it seems the biggest complaint has been about shields. I know there's issues about hidden behavior in the game such as damage resistances. But I wonder if in this case it would make sense to reduce the damage vs shields and increase if it's damage vs non shielded targets. I'm not thrilled about these ideas of building different satellites and all this crazy stuff. It's already a micro intensive unit.
If it just does less damage to shields perhaps a 1 T2 shields can easily stop it, and it does more damage to units, you would be incentivised to use it for defense more, or it would really require other standoff damage units to make it able to get anything done against base infrastructure.