GeoIP support for installer is really nice
RHEL7 installation note says "The new graphical installer also generates automatic default settings where applicable. For example, if the installer detects a network connection, the user's general location is determined with GeoIP and sane suggestions are made for the default keyboard layout, language and timezone." but CentOS7 doesn't work as expected ;-)
GeoIP support in Fedora20 Installer works well and it's pretty nice. Boot from live media and it shows "Try Fedora" and "Install to Hard Drive" menu.
Then, select "Install" and...Boom! it shows in Japanese without any configuration automagically!
I want same feature for d-i, too.