I always found this one interesting, or at least noteworthy.
"Both can't exist, as a vessel I'm much too weak, much too frail."
That implies that might not always be the case or that there might be exceptions.
I find it interesting that the MC wasn't able to purge Jake's power if the MC consumes him. The 1st pulls him into it's mindspace and the MC is too busy being hunted that he doesn't have a chance to deal with anything like purging his power. It's possible when the 3rd and 4th save him that they purge the power, or it's sitting in the along with the part of Jake living in his mind.
That could possibly be intentional. There might be a part where we need Jake's help later in the story. If Jake lives then he can do it, but if Jake is dead then it might be the fragment of his power that ends up doing the same thing in the story.
wouldnt that create the opposite issue? If she could take your powers why did she never make an attempt again? I've only played through with 0 corruption but I dont think it really changes too much
It's possible that as time goes on Ella starts to like the MC more and decides that she'd rather not murder him to absorb his mutations, or that could just not be a possibility.
If you have high corruption the way your MC acts and speaks can be a bit more aggressive, you can start to understand the monster language. Also the monster parent tells the MC that he needs to consume and grow more powerful when you have higher corruption. Nyx also says that corruption can have a subtle effect on how powers express themselves, which we can see in the fight with Klaus after the car crash. If you're low corruption you attack him by growing a bone blade on your tongue, if you're high corruption you stretch out your neck and bite him. I haven't noticed any other differences with powers.