I really like the 1eth proposal. Good foundation of this proposal put into numbers and taking future development into accout.
I also like very much the thinking to come from the result you want to achieve: How much do I want to spend on hash security.

As security needs to function in any case I am wondering: how would the 1 eth proposal work in a crash scenario eg 1 year with eth being at 40 $ (even thinking this is not likely)