From talking to Psion about this outside of this forum, I am fairly certain he wants the PC's personalities and desires to shape the campaign, so saying he wants to force the PC's to do as he wishes is assuming facts not in evidence, I'd say.
I think what Psion is saying is, if he knows I want A and B, and that I am willing to do C E and G to get A and B, he can say, "Ok, here is where you are, here is a brief pic on why, start RPING"
I don't think he wants to cut out the RP, either, just the "Ok, how are you going to get from Minolta to Canon?" "We take a boat, and then, we walk the last 10 miles to the mountain, and then hire horses" "You cant find horses" "Oh, alright, we hire a coach." "Sorry, no coaches." etc. Cut that whole scene out and get straight to the you leave Minolta, arrive in Canon, it took X time, which no one cared about anyway, get RPING, John meets you on the docks at Canon.
I like the idea a lot.