most of AOT watchers realize how Hange seems less cheerful and less of a "mad scientist" after Erwin's death, where they have to assume the role of the commander of the SC. and i think, it's really sad. cause when they were just a section commander, there was less responsibility on their shoulders other than doing experiments on titans (cz far as i know, Hange squad's specialization is research), which they love and are so passionate about.
so when they bear the title of the commander, they only get less time to do something they truly love. they can't be the comic relief anymore, they have to bear expectations to be as competent and genius as Erwin was. especially, after the 'return to shiganshina' arc, they finally find out that their enemies all along arent just titans. it's the whole world.
this makes Hange's death all the more fitting to me. everybody knows their love for titans. so after years of being unable to truly dedicate their time to the creatures, and given how fitting the situation is, Hange chooses death by titans as their perfect destiny
"You understand, right, Levi? My turn's come at last. I'm giddy with the desire to make a supremely cool exit. Don't stop what I've got going."
