I wish they could just make a phone that has 3 or 4 day battery life. I never understood this obsession with thickness, even the normal iPhone is too thin to properly hold without a case.

totally agree, chasing ultrathin designs has diminishing returns. There's so many practical ways to extend battery life such as letting users selectively dial down performance, adding a bit of extra thickness/weight, rethinking how power hungry features are scheduled... It's a matter of priorities, and Apple is obsessed with design (with dubious results, ie magic mouse charging port)

I completely agree with this; in practice I have to charge my iPhone in the daytime to make it through the day (probably not when it was new). It would be great to have it go multi day for the days I don’t/cant do an overnight charge.

That would be how you get a one pound iPhone which no one would buy.