My proposal? I won’t take credit for Satoshi’s work, it was his proposal:
https://satoshi.nakamotoinstitute.org/posts/bitcointalk/485/
https://satoshi.nakamotoinstitute.org/posts/bitcointalk/485/
He/she asked, in effect: How do you plan to deal with the blockchain growing exponentially instead of linearly? And how much acceleration do you think is reasonable?
At any rate, the suggestion was for one increase, not an infinite sequence of increases, which your suggested exponential growth amounts to.