now that the SDK rules are out, and any system improvement is out of the question, I’m thinking on partnering with an iphone developer for a jailbroken app.
.
it should work this way:

1. click and hold home button opens camera app.
   • overrides password protection
   • respects current UI guidelines
2. release home button shoots picture.
   • picture viewing respects password protection
3. optional: automatic photo sync
4. optional: metadata editing (i can write, eh?)
   • add title
   • add description
   • add tags… er, keywords
   • add rating

those are the software-only mods I think of that can make iphone a badass picture-taking machine.
.
original post here.