You are free to organize your own work crews however you please. Others may not be interested. Bitcoin & Lightning potentially make it possible to be paid by the minute. There are lots of reasons people might prefer that. Slavery is force & coercion & should be opposed by force. Saying that hourly wages are a form of slavery or that "renting people" is slavery would suggest you believe they should be opposed by force. If you want things to be voluntary then you advocate an anarcho-capitalist world whether you like it or not. I could see socialists making the argument that your effort to place % based valuations of people creates an inhumane sort of heirarchy too. Your distinction between what you imagine as some sort of ideal & the wage rates that people agree to is completely arbitrary.
Its not arbitrary because the wage system enables the payer to keep the financials secret. If the inputs and outputs are divided then the whole balance sheet must be transparent. Withholding and omitting knowledge is shady as well.
Anyway, I'm tired. I'm turning my phone off. Here's a parting picture of me. https://image.nostr.build/5352f7d4ed0082dd4127d9217f719bd0b766c6f6e7b5e7bc59d8c3f6f9acfa19.jpg
... And its funny but my Murray and yours knew eachother. Below is an article talking about how yours kicked mine out of his living room in the 1970s. https://www.thenation.com/article/politics/bookchin-rothbard-anarcho-capitalism/
If we create an environment where anyone can start a business (or work to solve some problem in an economically sustainable fashion) without paying anyone else for permission, then we create a world were anyone who wants work has more options. Then arrangements where people are more open about all financial arrangements might out compete everything else. So long as the threat of taxation exists it might be necessary for most dealings to be private though.