I agree that doing something over and over and expecting different results is bad. But the EIP is the same thing being tried over and over.
In reality, we could change the economics all we want and it won't help. Constantly changing the economics so that investors have no clue what the true goals of the potential investment is would also qualify as insanity.
The real thing that Steem needs is a clear vision and marketing that clear vision. The EIP just adds more confusion. The original n^3 + 100% inflation would have been fine if it was marketed. Instead we keep fiddling with it, hoping investors will magically get it by osmosis.
Steemit, Inc. currently says that their vision is sustainability (ads and programmatic selling). There is no mention or focus on STEEM Power (which means there is no focus on the fundamental unit of accounting for the blockchain).
So yeah, do your EIP. I think the only marketable aspect of this hardfork will be the SPS. In fact, once the SPS is launched, I'd like to see a proposal to switch all inflation to SPS, then make witnesses beg to fund the author/comments rewards pool, curation, interest and witness pay monthly.
RE: HF21: What Makes Steem Valuable?