Just switch Iggy and Loui up already, I wanted this as soon as speculation began (and I know loads of people on here did too). Thing is, Loui is not the type of player that will carry a whole line. If his line plays bad, he'll look decent at best. He won't put up an effort that makes you go "Oh damn, he really tried to go places, but it's hard when your line mates don't help". Don't put him on a line with Bergy and Marchy. Anyone else find it funny how Eriksson got loads of credit when Bergy and Marchy played up to par for a couple of games? It's because his plays became more noticeable when they led to goals. Yesterday was horrid, sure, even isolated from his team mates it was probably his worst game of the season. Still, he wasn't even the worst player on his line, and it's not a coincident that he looked so bad when Marchand looked out of place and (as many have pointed out) drunk all game.
You put Loui with Krejci (who was probably our best forward outside the fourth line) and Lucic (who made some nice plays, but didn't put in as consistent effort as he usually has this season) that game, and they would have played better. Not only this, but Loui would've been able to put up the same kind of game as he did yesterday and looked at least half-decent. I don't know where that leaves the second line, I'm not sure if Iginla would get some oomph from that line switch, especially with Marchand being terrible, but at least Bergy would cover up defensively for them, and they'd go +/- 0 - shame for Patrice, but until those two play better, that's the only option unless you want to involve the third line in the change.
The first line is probably the line that gets pinned in our own zone the most, even more than the third. Surely the coaches must realise that putting a defensively apt forward in there could only improve things. Playing with Bergy would give Iginla more opportunity to do what he does best, and having Eriksson play with Krejci and Lucic would alleviate some defensive responsibility from DK, and get that line going on some nice rushes.
That's how I see it.