It would be useful if on the first page there is a warning - "The advanced features are not enabled. They include Designer Mode, Query History, Query Bookmarking and more.
Why? Beacause very, very often phpMyAdmin installation proceeds in the following way: 'tar zxf phpMyAdmin.tar.gz'. Nothing more. No reading of readme. No config poking. I am using phpMyAdmin from 5 years and just today I learned about theese nice and useful features by accident.
Kudos to all devs!