that team was just so deep up front
one key was having the equivalent of an entire forward line all coming in and playing at a high level right away (vanek, roy, and pominville). that gave them three very dangerous lines.
you had briere playing at an all-star level, with two of kotalik, hecht, dumont, and pominville. then you had drury as buffalo's brind'amour, with mike grier and one of the leftover wingers from that list above. then vanek - roy - afinogenov. and you still have tim connolly when he was healthy, and a really good grindy fourth line with adam mair and gaustad.
but imo the real key was the super underrated tallinder and lydman pair, especially tallinder, who was playing conn smythe hockey in the 2006 playoffs.
iirc, in year two zubrus replaced dumont and jaro spacek replaced mckee. then the disastrous offseason after that.
maybe one thing to keep in mind is the future looked bright. when briere and drury walked, that's a gigantic loss, but the team already had too many forwards and had dan paille, drew stafford, and clarke macarthur coming up. with campbell really coming into his own, they really shouldn't have been that bad in 2008.
like, i get why they were bad in the years after 2008, because their pipeline ran dry due to three bad drafts in a row, 2005, 2006, 2007, after an incredible run before that. but 2008 should have been a playoff team right?
the other thing that sticks out looking back is they drafted dennis wideman in 2002 but never signed him. they also drafted jan hejda in 2003 but traded him in the summer of 2006 for a seventh round pick. those two could have made a difference in the post-briere/drury years, as numminen was aging out. wideman might have also made a difference in 2006.