Construct a server rack that works like a network Patch panel and server power bus? Thus one would just install the server in the rack slot, no more Cables to the server. Bonus award if a robot could slide in the server in the rack.
A downside of this kind of thing is that it makes upgrades and maintenance harder, and you often have to do any hardware work on a whole rack at once. Heterogeneous setups get really hard. And it’s usually very vendor specific.
I think it's probably best kept modular.
Alternatively, connect the server to a 48DC bus when its racked in providing +48 volt direct current and ground which can be through the server chassis.
Network connectivity should be provided in two standardized positions as well.
No. Cost / value is not in alignment there. You want your servers to be cheap and disposable.
Plus lose the control plane and you lose all the blades within it. There's just no value to it unless you're doing workloads that benefit from a high degree of locality. Cloud services focus on having their networks be as fast as possible so as to reduce the disadvantage of not being highly local.
Oracle (my employer), and AWS have been announcing various HPC cloud products where we're starting to focus on highly local, servers with fast interconnects, and it's still not looking at blades. HPC workloads are rather untapped by clouds so far, and it's a big market.