I read your request in the other thread. It would be pretty simple to write a plugin that did that did what you want. I thought about whipping one up for you but it would be just another of 5 projects I've got going on right now (not to mention all of my other obligations like work, dive team, and for some reason my fiancee is adamant that I actually participate in planning our wedding).
But since you mentioned payment...
If you paid somebody to write it, would you then be mad if it was made freely downloadable for everybody else? Or would you want all the rights to it?
If you paid somebody to write it, how obligated would they be to constantly tweak it or add to it as you saw fit?
There would have to be some sort of scope of work document drawn up that both parties could agree to so that the author wasn't constantly trying to hit a moving target once you got a taste of having your own custom plugin created just for you and came up with a huge list of new features you wanted added to it.
Just a few things to think about when commissioning somebody to build something like this for you. I unfortunately learned the hard way not to undervalue my time and not to commit myself to a timeframe when working on something like this.