0.2.x or 0.3.x HostAP drivers, built in and configured to be used instead of the prism2/wlan drivers, and an updated wireless-tools. They're much, much better client drivers, and of course can do neat things such as acting as an AP.
Some features compiled in would be nice, such as firmware uploading (and the tools available to do this as a seperate ipk, maybe) - having this feature I'd be more than happy to document a process to upload newer firmware, and this might solve problems I've read about some people having with CF cards.
Give me a yell about this if you want.