Another person for whom they will have to pry away my SD card. I travel quite a bit, so I want my content available locally on the phone (without having to pick and choose and make trade-offs). It would also be interesting to compare how much juice your phone uses to play music or video from the SD vs. streaming from the cloud.
As for the battery, you can never have too much. Yes, I'm not a particularly heavy user and can easily get a day - but my preference would certainly be brighter displays and screen on more (I hate hitting a button to turn the screen on). Or you could have the screen pop-on for a notification, or on movement (such as picking it up), but services to monitor that would sip juice, as well.
It's mostly a cost issue in terms of selling a phone for a certain price at a certain margin. I think the list of consumers frustrated with limited choices is growing. Can't wait for the day when I can order my phone like a computer and choose all my hardware.