I liked the character development of Jesse pinkman and Walter White. At starting Jesse was doing it for money and have fun with his friends and had no family nothing on the other hand Walter had everything and a calm guy but no money . But throughout to the series it changes Jesse started giving more values to the relation not money where as Walter started become more arrogant and do not care about relations. It reflects at last episode Of series and in movie EL Camino where Walt was hated by everyone that's the time Walt realised how far things went away because of him and he says to Jesse "I want it" while Jesse points gun towards him but on other hand Jesse's friends helped him to get away from police.
And last thing the scene development around Todd and Jesse. From Killing Andrea to treating Jesse like dog and knowing about that cleaning lady that he killed just because she found that book and many more when Jesse get Todd with Chain and choked him to death I am damn sure everyone got a satisfactory feeling.