Thank you for trying to improve Django. I can see you are frustrated with a few things.
Django is made by a community of volunteers. So your suggestions - there isn't anyone responsible for making them, per se. But the good news is, you have the power to contribute too!
For your suggestions:
1. As I understand, you'd like more interactive or visual examples. We have *some* diagrams in the docs, but not many. They're harder to maintain. If you have a concrete proposal of some diagrams to add I'm sure people would be interested in reviewing them.
2. “Reusable components” are a suggestion that has come up in many different forms. There are several third party packages out there, e.g.
https://www.django-unicorn.com/ . Have you explored these? A proposal to add something to Django itself would need some research.
3. Places to give feedback - it varies. We don't really talk about "feedback" but instead "contributing", because Django is community driven.