To the best of my knowlegde, the Anderson Powerpole connectors are very common among astro people - replacing the "cigarette lighter" connectors. And I'm talking about these:
A lot of people for instance use a "Rig runner" on top of their mounts to distribute power to all the devices - based on these. For instance:
The device your are designing is effectively a far more advanced version of a RigRunner (sort of).