OpenChange
Natively access Microsoft Exchange using OpenChange.
Gnome 2.26
Update to Gnome 2.26 to ensure that Fedora stays in sync with the upstream version of the Gnome desktop. The user experience should be largely unchanged.
gcc 4.4
Switch GCC in Fedora 11 to 4.4.x Rebuild all packages with gcc 4.4.x
20 Second Startup
Make Fedora boot and shut down faster. The goal is to be at the login screen in 20 seconds and then to be as fast as possible after the login (gnome-session).
Eclipse Profiling Tools
Native profiling tools in the Eclipse IDE and integrate with the rest of the development environment. Specifically add Linux Tools, OProfile, and Valgrind integration.
ext4 Default file system
Make ext4 the default files system for anaconda-driven installs (replacing ext3). User should notice generally better performance, and benefit from things like persistent preallocation when using updated torrent clients, etc.
Firefox 3.1
Upgrade Firefox to the latest release in the Mozilla 1.9.1 series (Firefox 3.1).