Hmhmm - for the record - I share the fear about the feedback of adding nodes only if needed on the price for storing data on safe =O
But I guess it would make an attack more time (and because of that money) intense… So I think adding vaults only on a need basis makes sense in my mind - the impact on storage costs/farming reward is somehow hard to grasp for me for now…
Do you happen to have a more in depth concept/analysis on how those two aspects are meant to work together to protect the network @maidsafe …?