On the other hand if by efficient you mean the easiest way for "investors" to get their cut of the inflation then the answer is no. The most efficient way would be to just pay interest to staked coins.
I even disagree with this and think that it’s a fundamental flaw in @therealwolf’s basic premise. Right now investors are able to outperform Hive’s inflation rate due to inactive, unstaked, and inefficiently used tokens; with minimal effort such as staking & delegating to a reputable application or curation service on Hive.
As soon as you flip the switch to pure stake and earn, everyone is going to lose out equally to the inflation going to witnesses, DHF, etc. There is no way left to outperform inflation. Everyone hits optimal game theory together, thereby everyone loses.
It’s the equivalent of setting the wins of a lotto ticket or the spin of a slot machine to its long term ROI. It allows everyone to play the game perfectly... but that equates to scratch off lotto tickets that cost $1 always revealing a payout of 95 cents! Yay... where’s the fun or profit in that?
That is a very important point, if we were to switch my APR from curation would drop from 15% to around 10% (at the current ratio of vested hive).
And that's at the current ratio of vested Hive. This proposal also wants to make it easy for exchange accounts to vest. Combined with coexisting desires to shorten power downs and increase liquidity, there would be very little unstaked Hive. Everyone essentially becomes "dumb money." A new investor will earn tokens at the same rate as a 3 year old "dead" account that forgot its keys.