This is another thing. Alice might be the perfect match for her progenitor, possibly slightly more so than the MC, though this is conjecture at this point.
I remember Bramon Xanthe mentioning Ella had better control over her shapehifting than the MC even at level 1, but the MC is able to overcome this due to the memory trait, and do things at level 1 she couldn't do even at level 4. Ella also mentions Emily being even more suited than her or the MC, physically speaking, but what does that mean in the end? I don't trust Ella's ability to see people's potential, she didn't realize the MC developed the memory trait. When replaying the game, I noticed that she was hoping(?) to develop the trait at her fifth evolution, but didn't.
I suspect being "perfect" or close to it will either seriously alter the 5th evolution, or there could even be a 6th evolution for some people.
Going through my replay of the game I've noticed Ella mentions that the monsters DO have a purpose for infecting their victims. It's never just some freak accident or chance encounter, they actively seek people out. At first I thought it was just like Angelina's monster which probably infected her to feed off of her, growing its own strength. Or Kenny's Monster looking for a strong mate to produce a stronger offspring, probably just like Aglaecwif. But some of them, like the 3rd and the 4th seem to have something different in mind.
My theory:
-Some are trying to create vessels for their Origins to descend down into, that's probably the Apostle's reason.
-Others like the one that infected Demi or the one that infected Danica or even the one that infected Alice or Oscar; have a purpose for making powerful "subordinates".
Regardless of the reasoning, we ARE being USED for something regardless. To make spawns, to be vessels, to further their power? Whatever the case may be, the monsters aren't our friends in the slightest.
I'd wager whatever power struggle is going on in the monster factions has something to do with it. Monster kind is DIVIDED which is why they aren't descending upon the Earth in total chaotic organized hostile takeover fashion, and instead sometimes fighting each other, like the 7th and the 3rd&4th or the 1st and the 3rd&4th or Aglaecwif hating Valravn's kind, etc. It's like a game of chess in my eyes, they are making pawns for whatever game is about to commence, and their hope? Is that they'll corrupt enough to follow their will in whatever side they wish to take.
Back to what Ella said, if it IS true that they aren't giving power for free, we know that Evolutions and even infection victims have a deep connection with their monster or even progenitor to an almost trance like state, which is probably why the more you evolve the deeper the connection and risk of monsterfication. It seems like THEY grant the evolutions, or at the very least have the final say in whether or not you can evolve at least for the higher lvls. So what strikes ME as odd is how Malik, Henri, and Bernhardt got their 5th naturally...We know Ella probably didn't get hers because she didn't have the Memory trait, sure. But what do the monsters get out of making the TOP GUYS that actively hunt them down stronger? Henri's seemed accidentally, which is not only unheard of, but unbelievable, I'd wager he spoke to his progenitor and struck some kind of deal much like how Ella has a deep personal relation with the 3rd & the 4th.
Back to my point, Ella's purpose for her powers was never to become Lvl 5 and become the Origin's vessel, but to find and turn as many Superhumans to the side of the 3rd and 4th as much as possible, which is why she not only talks to them but has a knack for finding compatibility. Again, if evolutions are less natural and more the MONSTERS choosing their victims with a purpose, there would be no scientific way to determine compatibility much less potential, Ella is being FED the info from an outside source i.e the 3rd & 4th.