Fact is, the Bruins are cycling years where they load up with years where they have to back off and hope to get more out of young players for Cap reasons. Last year, they cycled up by signing Iginla's bonus-laden deal. This year, they pay for it.
The "Fanboy Solution" to any roster issue is to name the best player who plays that position and who might conceivably, no matter how remote the chance, be available. For example, Seidenberg goes down and the Fanboy Solution is trade for Yandle. Iginla starts looking elsewhere and the Fanboy Solution is to explore another full-price RW UFA or trade for an established player with, like most established players, a mature contract to go with his mature game. The Fanboy Solution rarely happens, and when it does, it rarely works out the way you'd hoped.
The Bruins go into the year with at least two vacancies up front and possibly three if Kelly is moved - as he almost certainly needs to be. There are a number of permutations for how you can look at those vacancies. Right now, 1st line RW is open, but there's a lot of speculation that Eriksson would move up leaving the vacancy at 3rd line RW. 4th line RW we know. Here's a quick look at some sleeper candidates for the Bruins to fill those three vacancies.
1st L RW: Seth Griffith
What? - When you hear the Bruins talk about this spot, it's where they want a right shot finisher. This is the guy the line looks to set up most often - Iginla took 40 more shots than Krejci, and 50+ more than Lucic. Griffith is a righty RW who's main plus characteristic is he has a good, accurate, quick shot and knows how to get it off. This is about the best fit for Griffith that he'll ever see....
It's a Sleeper Alright - Griffith isn't big, and there would obviously be questions about his ability to play against not only NHL D but first pairing guys. He's not fast either, so he'd sort of fit on that line. The biggest question is whether he has the board skills to cycle the way that line has when most successful. It's a long shot, but it's intriguing to think about.
2nd line RW: Alex Khokhlachev (Ryan Spooner)
What? - Call this the Seguin option. If the Bruins opt to keep the chemistry between Soderberg and Eriksson intact, it could be Reilly Smith who gets a shot in that 1st line spot. He wouldn't be a bad fit, actually. The Bruins could then use this spot to break in a rookie with a lot of offensive talent and speed the way they did with Seguin - meaning they'd also have to be prepared for his weaker board play. Khokhlachev would benefit from playing with Bergeron and Bergeron would minimize the risk of a raw player. You'd keep the productive Marchand Bergeron dynamic and add a kid who we know can score and who has a pretty good one on one game. What better way to break him in? (I added Spooner here because I don't know where else he'll get a chance. If he can play wing, maybe he can do the same things as I think Khokhlachev might.)
It's a Sleeper alright - Khokhlachev is still raw, though his first season in Providence is encouraging. More importantly, it would likely mean a less productive season from Bergeron as he works to minimize the rookie's mistakes. And Khokhlachev is not Seguin, so tolerating his errors has less reward to balance out the risk.
3rd line RW: Craig Cunningham
What? - Again assuming Eriksson isn't moving up, Cunningham could be a perfect compliment to the two Swedes. He's quick, older than the other prospects, and has the skills to be that "Alex Burrows" type player with the Swedes - clean up the garbage, shoot it when you get it, chase the puck hard.
It's a Sleeper Alright - Florek, Camara, Fraser would add more size to the line. Cunningham's tiny. He's also had precisely one call up since being drafted - 2 games, 4 shots, under 10min per game, not much else to show for it.
4th line RW: Who Cares?
Are you not entertained?!?!