Yet I'm still uncertain about his actual plans, even if he's the father of the child, as far as I understood his main motivation is gaining freedom for himself and the people around him, and how exactly that is going to play out in end, I'm not sure of. Zeke's motivation makes sense in the fact that as long as Eldians exist and have the power of the titans, they'll either be seen as an enemy or a weapon by the other peoples of the world, so soft genocide is a somewhat obvious solution there, but how could Eren use his power to free the Eldian people? Just using the rumble to kill everyone else would be the obvious solution, but I kind of doubt this is where it's going, though it would be a rather powerful ending about the role of the kings morality and choosing one's own people over others, even though this entails immense cruelty and destruction of human beings that essentially feel the same as oneself, which is a theme that has been consistent throughout the entire story. On the other hand he would have to touch a titan of royal blood to actually use the Rumble, and by now this could only be done by sacrificing historia, so I doubt that's how it will play out
Regardless of this being bait, Levi never had character development, the spin offs show that rather well, he's a pretty flat character, and I think that is his most redeeming quality. He's not dark and brooding over this or that, he's a solider through and through, plain and simple, he cares for those under his command and considers them his family, yet the gravity of his position demand his discipline and his willingness to sacrifice both himself and his subordinates. It's fine to make him so utterly powerful, it's fine to simply go full asspull and just have him win every fucking encounter he's in, precisely because that's what the story sets him up to be, humanities most powerful soldier, and really nothing more. Which is again fine, he doesn't have be all philosophical about humanities mission and which strategy is the best or whatever, he's a tool, both in terms of storytelling and as his role as a captain, and you don't focus your story on a tool just because some fags want to get fucked by him.