Effects of Vasil Hard Fork / Hydra evolution on stake pool operators

In June there will be the Vasil Hard Fork with improvements in scalabiltiy and TA Performance. Later on there will be further improvements along with Hydra, that will lead to in the end 100.000 or more TA / s.
This will be only be possible, if the current mechanism in block calculation, where one pool of 3000 is calculating a block and the other 2999 are idle, will change.

Is there a document where this aspect is documented or can anyone answer the question, what are the consequences for stake pool operators if Hydra is implemented:

  • What is the effect on reward calculation?
  • What are the effects on minimal hardware configuration?
  • Do SPO have to install additional software besides the node software?