My iPhone 4 is perfectly cool...
I meant for hot summer days. I'm never very specific (which is a bad thing).
i see no need?
Dunno either... I'm not a photographer, so I wouldn't know the exact benefits.
i think the iPhone 4 is thin enough, any thinner and it would be less comfortable in the hand
To one's own preference. I wouldn't mind another 1-2 mm shaved off.
i dont get this? why? the screen is on the front?
The back wouldn't be a screen...
higher ppi? its already higher than the human eye can distinguish from the normal viewing distance
I can still see pixels (if I try). 
waste of space in the device, and would look ugly
Personally, I don't think it's a waste of space. Your iPhone would almost always be charged, and I'm pretty confident Apple can turn 'ugly' into 'pretty'.
i agree on the LED for notifications, but doesnt need to be a flash too, see
here for my idea
Please, please tell me you emailed this to Steve/ sent it to Apple. It's pure genius and totally something Apple would do! 
i think 4 inches is also too big, maybe it could be pushed to 3.7, but i have an ipad if i want a bigger screen.
True.
not sure of it's usefulness, if you have a problem you call apple, you don't send of a diagnostics report and hope they get back to you
It's basically the feature found in Mac OS X - if an application crashes, a window pops up asking to report it. I'm describing a feature of a similar sort.
what is wrong with swiping?
11 screens to swipe? No thanks.
i like the lock screen to be clean, if i want icons all i have to do is swipe
Lots of other people would rather have it filled with useful info. We'll have to wait and see what Apple delivers.
i think it would make things too cluttered
Again, to one's own preference. I wouldn't mind having the option.
you already said that
I did? Oops.
no we don't, perhaps menus and such could be polished, but the general feel of the UI is well known and shouldn't be changed
Agreed. Additional menu polish, etc., etc. is fine with me. 
why do you need a tabs feature and a new page feature? the page system works perfectly on the smaller screen of the iphone, yes you can have tabs on the ipad, because its a much bigger screen.
Yeah, I don't know what I was thinking there. Like I said, I wrote this quite awhile ago. My mind obviously wasn't with me when I did so... 
waste of space, just use a passkey
I can dream, can't I?
just making things more complicated, what do you have against the swipe to unlock?
Not sure. Another not-so-well-thought-out-feature of mine. You should have said "That's what JBing is for!".
how many times are you going to say this?
Sorry. Repetition for effect?
isn't that what the calendar is for?
I'd like cross-integration then.
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While i agree with a lot of the things you said, some things stood out to me as bad ideas.. sorry for the long post but hey, this is a forum.