As a content creator, my first thoughts towards 50% content / 50% curation rewards were something like 'oh ffs sake'.
If you've missed 
There are numerous other proposed changes including a separate down-vote pool and a change to the linear rewards curve, and whilst I think that more than one change could be required for eternal happiness, my brain cannot tackle all three at once and so I'd like to just talk about the percentage split between content creators and curators.
This is not a real park, there is no dog-shit in sight source
Producing one piece of content a day can sometimes take up the whole day. I generally work hard on the post (this post is not a prime example) or spend time in the comments providing the data/pie chart etc that I've promised to gift in the main text.
Hearing about a 33.3% cut in the rewards paid out for authorship of a post sounded worrying, even though it would double up the curation rewards I received.
A quick look at steemworld.org showed the rewards over the past 7 days to be:
Curation SP: 54.16
Author SP: 70.24
SBD: 56.89
Factor in the 50/50 model for the past 7 days and these numbers would be:
Curation SP: 108.32
Author SP: 46.82
SBD: 37.92
And the totals in $, if 1 SBD is $1 and 1 STEEM is $.80:
75/25: $156.41
50/50: $162.03
Well that doesn't look so bad does it?
Yes, I could have posted more than 3 times in the past week, and if I did the same calculations in a weeks time (after 7 posts in 7 days), 75/50 would likely be on top by much more. I also have around 21000 active Steem Power (thanks to kind delegates), which is more than 99% of the all Steem accounts - 99% accounts taking the hit on the face of it, unless....
We need more curators. Have you heard that one before? I have, and I think we have a lot of potential curators, they just need to be lured out to play a bit more. And if that happens, the above numbers could swing back towards 50/50.
How?
I can see, under a 50/50 model, a reduction in bid-bot delegations, so much so, that it could leave only a few of them left. Many of small delegates could come back to curation with own stake, even if it's just in the main for a selection of friends. However, these friends also have other friends that will be seeking curation rewards, and so the net may need to be cast wider - find some new friends quality under-valued content perhaps.
The best curation strategy at present is to front run the 3/4 biggest bid-bots. I watch 15 SP accounts do it, and I also watch 
So would 50/50 bring out more curators to hunt for undervalued content? Even if the main reason was that they didn't need to produce 7/8/9 posts a day in order to prove their stake against?
It could happen. One account told me it would be a 'relief' not to be posting so much. I'm pretty sure it's not an enjoyable task, banging out 'sub-par' work, but it's the shortest path to stake maximization. I think we need to add a few curves in the path.
Curation guilds could benefit from this proposed change. Would stake come from the bots and be trusted with a guild like 
And what about the comments in posts? Up to 50% of the reward going back to the author of the post who likes the comments they see? That sounds good for engagement.
I'm pretty sure larger accounts would be in majority favor of 50/50. Small accounts earning 10 cents a week curation, with that moving to 20 cents on 50/50 are more likely to focus on the 'potential' loss in author income. It is only potential though, one decent vote could sort that out.
I think we need less (completely shit) content, and more curators. The most obvious way to attract more curators? Pay them more.
When?
Not sure here. Wait for an SMT, or just go for it 'here'? You could argue less risk waiting for an SMT, but as others have argued with me today, can we afford to wait 6/7/'soon' months?
Steem will be here either way IMO. The streets and offices could really reek by then tough.
I'd like to end with a quote from a witness who's been around the block a few times. I admit, I missed this point - Thanks for detailing it 
It’s the rationale for 50/50 that most people miss or won’t acknowledge - that non-bloggers are the demographic that we ought to cater to when it comes to incentives. It’s a much larger demographic and the more promising chance of “mass adoption” and consequent (potential) capital appreciation. source
non-bloggers = curators = investors?
Cheers
Asher