For 10.5.2, I'd like to see -
1) Bootcamp: Updated drivers for X64 compatibility; The updated drivers are already available for the 2008 Mac Pros, why not make them available to everyone else, without having to hunt for them on some dodgy bittorrent site?
2) Bootcamp: Work with RAID. I have my main OS X installation on two HD's running in RAID 1. I have a third drive, but I cant run Bootcamp from the default installation, to install windows on the third drive. Instead, I have to create a second OS X installation on the third drive, and then use that second installation to create the windows installation. Confused? I know I am!