I hope some manufacturers will produce a Thunderbolt 3 docking board in the Mini-ITX (edited, was Micro ATX) form factor. With USB and RJ45 ports and maybe some SATA. Basically a mainboard that replaces the CPU with a TB3 connection.
Here is a wide selection of cases for this form factor for nearly every taste and need. Looking at the current selection of TB3 docks and eGPU cases I am not really happy with the designs or features.
As for the mobile charger/battery/adapter combination. I don’t see the need. The EVE V has several ports, so even if I connect the charger/battery I still have enough free ports to connect other stuff as needed. The only adapters on my list at the moment are VGA/HDMI connectors for presentations.