PoS would eventually concentrate control to a group of major stakeholders and then no amount of innovation will be able to change that. If it's not immediate, then it's the end game of this model.
This is a REALLY good point. Even if PoS could "save energy",
do we really that kind of system?
Yup!
Let the kings compete for control, while people compete for profit.
Seems pretty balanced and fair to me. This way no one gets bored and turns to evil
The law of conservation of energy would make sure that no energy is "wasted" in the process, just transformed.