Each to their own I guess, but, I prefer the latest GUI, I think it is a big improvement.
It is split into first page for everyday actions, and second page for deeper settings and actions.
The first page has 4 shortcut tiles which can be set up to your needs, just right click a shortcut and change the link from the menu.
I install avast many, many times a week, and all the comments from users have been positive about the new GUI.
As to the Emergency Updater ........ I am using Private Firewall which has HIPS , and I have not yet seen a single problem with this Updater .