First, I'm pleased with the bag considering the price but there's room for improvements. The handle could be located 50-100 mm towards the back, it would improve the balance. The handle itself could be made of some more rigid material, it's not very ergonomic or comfortable.
The little pocket-on-the-big pocket is of unknown use? Better make the big pocket slightly bigger and square shaped, and make an internal pocket. The straps that are supposed to fix the neck have improper length; they are too long if you just attach the velcro ends, but they are not long enough to wrap another turn around the neck and then attach. I actually make a knot and then attach the velcro. The zipper runs all the way around the bottom end which could be appreciated by some. However, it puts load on the zipper. I once experienced that another low budget bag zipper ripped open and the bass was bouncing on the floor so it is a concern. All that said, this bag seems very well made and well padded. As other reviewers have said, if you want something better you need to put up a lot more.