Here's a few ideas for some basic apps, nothing crazy, we'll get to those ideas later.
-I definitely think the G1 needs a better AIM client. One that runs over data and not sms is a must. I think if it could show the status of what you're listening to on your music player (like ichat to itunes) would be rad. Also, so you can have custom msgs (available or away msgs). I also like how on gmail you can see the android to know the person is on a G1. The sidekick does this so you know the user is on a sidekick, and I. Like having that. The sidekick, btw, has an awesome AIM client.
-Also, I think the G1 definitely needs an auto text feature and possibly a spell check feature.
-The ability to create several highly customizable sound profiles so that you can have a maximum profile, normal, vibrate, silent, etc and customize the "phone settings", "messaging settings","alert settings" etc individually. For example, I used to have a setting that would have the msging settings go silent at a certain time, but keep the phone volume on.
A Notepad, to do list, unit converter, etc.
Well that my 2 cents. Like I said, just basic ideas, but I think they're necessities.
Ideass for crazy apps to come!
-TK