Maybe my thinking changed as I was working through my example :)

I think WP work is paid hourly, with a known lump sum split across this time and so there would be a fixed end point to the received funds.  If this is true (would need to listen to BT recording again) then it would be a case of offering up the list of features (work to be done) prior to receiving funding.

> To me, he seems to be doing all the work that needs to be done now without a worker proposal funding ....
# 
Yes I agree, but love doesn't buy food

> ... and even better he secured his own funding by finding users that want to support him.  Even better would be a revenue model outside of the reward pool which should be the aim of most apps imho
# 
This is the goal for sure.  So should WP's be seen as 'kickstarter' funds?

-----------

> Wether Steemcleaners take money directly from the author rewards or we first cut the author pool altogether and then put it into a WPS pool and then give it to them.

Right now they have one pot, the delegation.  Some is used to curb abuse, some is used to self-vote - they decide. What if there was no abuse for a week, would you be happy with all the SP going to 'salary'?

With WP, the salary is separated from the SP allocated for abuse.  This sounds more transparent and fair to me.

Just thinking out loud, I don't have the answers :)