There are a few changes that need making to the arrangement of parts:

• Jumper wires need to be longer to provide power to the Pi from the screen
• Jumper wires need to be longer so touchscreen can work over SPI
• Battery needs to move to right so power supply cable actually fits in around screen (component box could then be a bit bigger)
• Component box doesn't line up properly with its lid
• Would be nice if it were a little easier to remove component box
• Paint it, or maybe use some veneered MDF instead