RE: Do we actually need a worker proposal system? Let's get some real examples of work proposals first.
I'm with you that businesses should look outside the reward pool for monetization, but I'm not talking about businesses. I'm talking about projects for Steem.
And the examples I've mentioned (steemblockexplorer, steemd, steemworld, dsteem, beempy, etc.) are very clearly projects without any business model. (not every project should have the goal to make money - but that doesn't mean the developer(s) aren't needing money to develop it)
For example, steemworld.org recently introduced donations and while a bit came in (~400-500 STEEM) I wouldn't say that's very much, comparing to 1+ year of development.
Also, you have not provided any examples of proposals we can look forward too when this system is in place. "I'm very certain that..." is just not good enough.
I'm not yet sure how it will look like in action as the current sketch is very rough, so I don't feel comfortable to make an example proposal.