Who should they be ahead of? In particular Noreau... should he be ahead of McIlrath? Miller? Who? Even Thomas and Fast are clearly superior prospects due to both having significantly higher potential. Both have the potential to be above average top-6 RWs. Noreau's potential is still as a third pairing defenseman.
Noreau is a downgraded version of McIlrath. He scored .1 more points per game this year than McIlrath did last year (comparing them at the same age), but he doesn't skate as well as McIlrath (though Noreau isn't terrible), doesn't fight as well (though Noreau is also very good) and doesn't carry the puck as well (neither of them will be a puck mover in the pros).
I see The Undertaker as someone who's at a minimum a third paring defenseman and a likely second pairing one, with a shot to be a first pair guy like Beukeboom. I see Noreau as a guy whose uttermost ceiling is as a #4 blueliner, but who's most likely going to be somewhere between a #6 NHLer and a #3 AHLer.
That said, if we have McIlrath on one pairing and Noreau on another, I don't envy any opposing player who decides to take liberties with our goalie or skill players.