Account abstraction is very powerful and unique technology which is solely for the purpose of development and enhancement of a blockchain technology and you have explained very well that what are the major principles of account abstraction and why they are important to consider as well as you have also explain some of the important methods to integrate into an existing blockchain

You have explained each and every question by giving some of the important examples and I agree with the drawbacks that you have explained regarding account abstraction higher costs and integration problem are the major drawbacks that are plus point for my learning and it is new for me to learn I wish you good luck and success