I'm a LOT more afraid of Vancouver. I'd rather have Vancouver lose and play The Kings. If The Blues play the way they've been playing lately, they'll lose to The Kings or The Sharks. If they find their mid-season game, they'll beat either of them (given that they'll have the extra home game). I'd rather get the extra home game and start the series at home for The Western Conference Finals. The Blues will need that IF they get that far.
I'd honestly rather play as the number 2 seed in this year's playoffs. If we get by the first round, we would have to play the winner of Chicago/Phoenix, instead of the winner of Detroit/Nashville. We wouldn't get home ice in the WCF if both of the top two seeds advance that far, but I think the road to getting there would be much easier. Winning the West is never a bad thing, but I think it's a win-win for the Blues.