Lets just jot down some basic goals that I would like to accomplish

1. Able to recharge laptop from dead at least 2 times
2. Use only one USB C port on the laptop
3. The one connecting USB C cable will be able to transfer power and data through the one port
4. The case is able to charge at the full 100W capable of USB PD
5. The case can deliver up to 100W of power to the device
6. one downward facing USB C ports able to charge case and read data (thunderbolt capable)
7. Two downward facing USB A ports 
8. Full sized SD card reader
9. HDMI output

I will be breaking down working on this into two major subsections. First, the battery component and being able to charge it via USB C and then charge a laptop from the battery. And second, figuring out the USB docking station able to convert to USB A, SD card reader, and HDMI out.