Perhaps we'd learn that nobody wants to change the 25% split, and it would be moot, however this alone would be useful data for further changes.
I think what we are going to learn is that most authors are willing to give a bigger share of the rewards to curator which is a good thing because higher rewards for curators means more engagement and more demand for steem power.
It is essential that every users knows exactly how the curation reward system works, most users don't even know that the more SP they have the more curation rewards they get.
When users submit their vote they should be directed to a link explaining how the curation reward system works, educating users is key and I think that introducing curators/authors percentage will actually help in that regards.
I also think that authors should have the option to keep 100% of the rewards for themselves, the wider the spectrum the better. I agree entering a precise percentage is preferable because this will make every single post different and encourages curators to search for new content.
"When users submit their vote they should be directed to a link explaining how the curation reward system works, educating users is key and I think that introducing curators/authors percentage will actually help in that regards."
I am sure people will object that this will be "confusing" for some users.
Perhaps a tooltip that you get when hovering over the upvote button, that shows something like "Estimated .1 SP for curating this content", would convey that more smoothly. It could be wildly inaccurate (and say estimated on the tooltip), but simply making people aware of the concept while requiring nothing of them could be very beneficial.
"I also think that authors should have the option to keep 100% of the rewards for themselves, the wider the spectrum the better. I agree entering a precise percentage is preferable because this will make every single post different and encourages curators to search for new content."
I agree wholeheartedly. I merely didn't add those options on my image because I was fudging it in ms-paint and figured I got the idea across...