There will absolutely be a place for super nodes in the kind of networks that are going to be built out. Their performance will likely be somewhat limited comp

There will absolutely be a place for super nodes in the kind of networks that are going to be built out. Their performance will likely be somewhat limited compared to what you're looking for at this point due to radiation and the excessive mass of the shielding required to protect them from it. That can be mitigated with in situ resource production. Like burying a server rack scale processing node under ground on mars and relaying data to it with the network I described above or capturing water from comets and using it fill compartments for radiation shielding in orbital data centers.