I just have three: Phone, Safari, Messages.
I know I don't need Phone in there (I don't use it much, just for incoming calls...I usually just text people), but I like the balance of the colors.
And regarding the Camera icon...I can't bring myself to move that, either. Haha. That, Photos, and Calendar are the only apps left in the spaces they came in. Settings is at the beginning of that row, and those apps will probably stay there as long as I have the phone. The first page is the only one with any real organization, actually. After that I have two pages of 3rd party apps and then a page with the rest of the stock ones I rarely use.