Unwanted standard iPhone application icons can't be hidden. I'm never going to check stocks.
No MMS (Multimedia Messaging Service) client. Even cheaper phones offer this.
I need my damn TURN BY TURN already!
I want EVERY app to work in landscape mode. It seems that hardly any do.
Sync Todos and Notes via Activesync.
Run more than one app at any one time.
Ability to sync Notes with - and edit Notes from Mobile Me!
Search (Find text) ability!! (Ideally across multiple apps - but at LEAST in Notes!)
Ability to put apps into categories so that I don't have 6 pages of homescreen to scroll through
I wish that it had a Terminal app like Mac OS X so that I could access the UNIX underneath it.
Allow iPhone to play music through external/wireless speakers. i.e. Through an airport express.
Get &@#$%!ing Safari to stop #$%@!ing crashing all the %#$#@!ing time!
Add option to set the 'silent' switch to mute all sound or only incoming calls etc
I want to install 3rd party apps!
I want to hear music from my Rhapsody account (yeah, like that's ever going to happen!).
Allow music apps. other than iPod to run in the background.
Hand-writing recognition in note, wmail, and SMS.
Need to be able to view, save and backup PDF files
virtual network between iphone
Allow programs to run in a background!
Where is the Push Notification service they promised us by the end of last month?
Please add public transport options to Maps! It exists online already.
Make ANY app icon hidden with a small button like the good old minimize button in OSX or windows
EDIT WORD, EXCEL, PAGES, and NUMBERS! The last 2 should be a given.
Let SlingMedia and Slingbox run on my iPhone!!!!!
Let me run apps in the background. PLEASE!
Please give us copy/paste from any app to Notes or Mail!
Where is the keyboard - a slide out keyboard would keep the iPhone ahead of so many other phones.
I want a Turn by Turn GPS app.
An option to allow music to be played on top of any other app.
Please add a task manager (to do list). And have it synchronized with outlook
Add timer feature to the camera application.
I want a Slingplayer for my iPhone! the proof of concept exists, so what gives?

