Voted for
My vote is yes to 50/50 as a good first step, but just to clarify on my position, check out the end of this comment at the "extra" as I just want to focus on the 50/50 item atm.
Concern: 50/50 is too heavy. 40/60 might be better. Curators are taking too much of a cut while doing much less than authors. Better to focus on more apps and biz. There will be a different maximization game with the change.
Response:
Firstly, think of a hypothetical Steem economy with 100% author rewards and 0% curation rewards, 100/0. Voters will most likely just upvote themselves all the time. Broadly speaking, 100/0 is in effect, the economic equivalent of 0% author rewards and 100% curation rewards, 0/100, as voters just end up getting all the rewards voting anywhere. Nothing left for authors either way for any decent content. Looking at this symmetry, it stands to reason that 25/75 today is in effect like 75/25, and 40/60 is like 60/40. So 50/50 is in effect, just the same at 50/50. In fact I'd expect anything besides a close approximation of the 50/50 effect would end up collapsing into somewhere near the 0/100 or 100/0 region, after a long period of time. Again, just broadly speaking though. Not really debating 60/40 or 40/60 is better than 50/50, as long as it achieves the 50/50 effect in the end for every vote given out to something decent.
Secondly, authors effectively get their rewards from curators, and authors are also curators themselves. It's a social network blockchain. Personally, I don't really get the dichotomy here even though there are obviously users that only create or curate. Saying no to improved curation reward is almost like telling our sponsors they shouldn't get the best and most sensible returns possible from supporting our work.
Thirdly, imagine a channel where the best curators hang out while onboarding / promoting great content creators. Let's say Pewdiepie or whoever else you're already digging on Steem or anywhere else. With the right incentives, we'd be happily voting on content that we're already consuming everyday and even take the time to promote upcoming great content creators. Sure, the many different apps that developers build are important, but I can't think of a better business for everyone other than going the route of trying to improve Steem's economy via its rewards or POB protocol, something which no user interface or application can ever do. More biz and apps are good but they're not necessarily Steem's topmost differentiating factor in crypto. There are plenty of high performance blockchains for biz and stuff. It's better to get Steem's economy around the right ballpark with the community we have, build it, and then the best of apps and biz will thrive along the way.
Extra:
I hope the other 2 items would get considered sometime in the near future to seal all the conceivable leaks in the boat the best we can. It also adheres to a better blockchain philosophy in my opinion, if considering notions of quality & quantity & incentives. Everything we encourage shoving into the chain is a cost someone has to bear in the future, etc. Sure we can and should have loads of activities coming from a social blockchain perspective, but incentives are another matter and not necessarily and straightforwardly all kinds of activities == incentives. We shouldn't get mixed up between these arguments. Minimize costs and maximize benefits. Cliche, but it's paramount to any blockchain design, moreso than anything that revolves around traditional databases if we're considering a very very long-term game.
Maximizing rewards through whatever means, even the most lazy via curation trail is perfectly fine. There just needs to be checks and balances in the economy (as proposed in the link above) so it can at least benefit Steem as a whole over time. Even the most hardworking people will be lazy at some point, or lazy in certain dimensions. Or whatever, lazy is not really the point. We just need to design a environment or economy where lazy produces something good, like a working content discovery and rewards platform. Imagine if lazy autovoters are voting on crap stuff. Some "bribe" and deterrence from the change to 50/50, superlinear rewards, and downvote pool will likely change behavior or the "path of least resistance" to point to the good stuff that actually helps the platform.
Of course, a working economy means a positive feedback loop on the network, and that would necessitate improvement in part of reward beneficiaries as time goes on. It's the other way around at the moment, imo.