50/50 alone isnt that effective, from my pov the fix would need other measures as per linked in my comment above. It should be thought of as a chord to play and wouldnt sound as nice if we just play one note. If curation rewards aren’t important, then 100% author rewards would just cause more to self-vote and is the equivalent of 100% curation rewards as I’ve demonstrated above. I’ll just copy and paste trafalgar’s comment on it:-
There is a dirty little secret about curation %, it can be circumvented via a secondary market. So in theory people are free to kick back curation rewards (which some bid bots do) and author rewards and reach their own %.
In practice, with a certain level of free downvotes, the official curation % will likely prevail in that it'll determine economic behavior.
The idea behind all of this is to leave as much behind for the author as possible while using a combination of bribes and deterrence to get the stakeholders to actually vote on what they like rather than take their own vote rewards (either directly or through selling them). Curation, free downvotes and superlinear are just bribes and deterrences that are necessary, but we want as little of it as what's minimally sufficient, as they all have downsides/costs.
Superlinear makes it more difficult to place an exact value on a vote per SP as it's value is dependent on the future popularity of a post. This makes it more difficult to just vote on something that's shit, as you'll likely get more from curation if you vote on something that'll become more popular. More importantly, it also forces all profitable behavior into the light. You can't spam 5c micro votes across thousands of accounts using a bot and avoid detection. Well you can, but due to superlinear, you're doing it at a loss, because 50% of something popular is more profitable than 100%% (as here you're both curator and author) of something thats garbage.