The main problem is that I don't believe that it is possible to have a decent way to make Steemit sustainable.
How will you incentive many people to invest into a coin where a huge share goes to some blog writers and a big part of them are going to use selfvotes and other shit to get the maximum out of i? And if you want to get some extra profit out of your steem power you gotta do the same.
I believe that the economic proposal goes into a way where it might improve the Steemit experience, but fixing it? I'm not sure that is possible at all.
The curation increase will incentive voting other people more and thus incentive people to invest in Steem Power.
The rewards curve will make it more important to use bots but if you use bots and don't provide great content your content is going to be downvoted which is going to make bot abuse much more difficult.
Steem as a blogging platform is a highly experimental social experiment, and I'm not sure it can succeed at all. It's something we may find out with tons of trial and error.
But Steem as a platform for developers for Dapps, that is easy. Steem is easily the Platform with the easiest onboarding for new developers and with the help of cheap rpcs and resource credits + fast transactions it is very inviting to build your app on top of this blockchain. Especially with delegation markets which allow you to rent steem power more short term to get started it allows super easy onboarding without any commitment.
That's why MIRA was so important and that's why SMTs are going to be important too.
(Even though they might be badly late).
RE: Help Test Hardfork 21!