Been using EE v4 a few days and besides some small bugs all is working. But one suggestion I leave to rtcamp team is to make the default passwords that EE generates stornger.
I notice that by default all passwords are created with 12 characters and without special characters. My suggestion would be that all passwords by default to have at least 26 characters, including special characters like #, $, %…
Hope EE team can consider this.