Having caught up to the lastest chapter as of the writing of this post, I can say that it's a sad and hard decline in the quality of the storytelling.
I don't want to spoil anything, but Kei Sasuga (the author) keeps making all the wrong and illogical choices when it comes to decisions made by characters.
Some of the newer arcs were good, but the development after those arcs had massive game-changing potential that wasn't capitalized upon.
Overall it's a good story, but the writing as of late has gotten worse and worse as we approach the end.
EDIT (25/04/2020): So i've re-read most of the story and re-thought this post, the decline in writing quality still stands, but it's not as bad as i previously made it out to be, i've realised that Kei Sasuga has done an excellent job at making people invested in the story, no matter how insane some of the arcs may seem. I am still disappointed by the choices made for certain characters, but it's overall a good read.