This is the same idea I (surely didn't) "invent" a couple months ago. I looked at that piece of plastic above the clip on the bezel (when it is attachted to the front of the case), and thought, "what good is that thing doing?" I calculated that getting rid of it completely (dremel cut off wheel works wonders) I could do as much good (if not much more) as I could by enlarging the bezel holes to 3/16" or even 1/4".
The entire "breathing area" turned out to be almost 3 inches after I enlarged the holes in the front of the bezel. BTW- use a drill instead of a dremel for that, unless you have a variable speed dremel. I found the drill MUCH easier to control than a 15000 RPM two speed on its "slower" setting. 3 inches is a lot of breathing room (pun intended) for an 80 or even a 92mm intake fan. Yes, I know that all those small holes aren't as good as one big hole due to turbulence, but it still looks like an unmodded bezel, if that is the look you are going for.
I also plan to make a thin wooden block (probably with some type of foam on one side to act as an air sealer) to fit directly above the fan inside the bezel. This would act as a shield against the intake fan drawing air from higher up on the bezel, and from drawing in (already heated) air from inside the case and just recirculating it. Cover all the various holes you can around your intake fan with something. Duct tape works well, and will be hidden by the bezel anyway.
Those are the ideas I have been brainstorming the last few weeks or so. Hope they help someone squeeze a little more out of thier system!