What I would like:
1. iCal to be a fully functional calendaring program, not one from the 80's (example: auto set option of alarms for the love of God.)
2. Same goes for Address Book
3. More options for smart folders in Mail
4. Boolean search in the Spotlight GUI
5. Spotlight to give us the option to search in the Trash and deleted folder of mail.
6. iSync to go back to one interface and you don't need to keep iSync open at all times to sync all of your devices.
7. Consistent GUI.
8. Layers or sheets on the Dashboard. So I can have a game page, info page, etc, when the Dashboard is active. Especially when using a laptop, even a 17er, you fill the screen full of widgets pretty quickly
9. More screen savers and desktop images. Yes, I know they are just eye candy, but it adds to the fun of getting a new operating system. Sometimes the sizzle is as important as the steak.
10. Get .mac syncing to work reliably
11. Resolution independence
12. Tabs in iChat for the love of God. And have iChat remember the last location of windows
13. More codecs for Quicktime. I don't mind paying for the pro version, but have everything format playable in Quicktime so I don't have to deal with that POS MS product
14. Did I mention that iCal and address book need major updates? Seriously, those programs are an embarrassment at this point.