The point is, the opposition haven't been making the defensive errors to put the Broncos in the position to employ that plays that put Glenn / Gillett through. You originally said they should be rolling out those plays every game, but even you said yourself that they have to be patient and wait for the opportunities. Well, those opportunities never arose, the defence was too good. So, please tell, how do they run those plays every game when the opportunity isn't there?
Your point is sound however, as the posts above largely point out, the team's creativity seems to be so hot and cold it's not funny. The Roosters game is one example of zero creativity, followed by the next few where the left side for some reason just started to work to such good effect. Those sweeping left side moves can be put on against any defence. Against Souths, the timing went badly wrong - partly 'cos Hodgo wasn't there to keep some structure so most of those plays were too flat, and Souths great one-on-one defence nullified them.
And no-one called Glenn into the line, or he just couldn't be bothered.
As for Prince > Gillett, it doesn't take much for a play to be set where Gillett stands deep and runs onto a planned pass, or as is pointed out above so very well, a short kick behind the line, again, with say Gillett or whoever chasing.
Gillett is a weapon. We seldom use him.
I have seen games where Macca and Lockyer have delivered terrific short passes to Gillett at speed and he more often than not walks thru the defensive line or at least gets into a position to offload to ....... ?
Equally, in the middle third, by all means run straight and hard to suck in the defence with quick play the balls but no matter how good the defence, instead of exploring the edges all the time, an inside ball on say the 3rd or 4th tackle would also be a nice touch.
Thing is, all attacking plays are based on support runners/chasers at which we largely suck.
I am sure these basic moves are worked at training. Why they don't happen consistently on the field explains our form