I disagree. I think there's an apparent need upfront as well, but I think that void can be filled more easily through creative trading, rookies, and bargain free agent signings. Surround Bergeron, Krejci, and Backes with capable wingers. The base is there. And you have two near elite offensive wingers in Marchand and Pastrnak....
The Bruins were 13th in scoring in 16/17. They were 5th in scoring in 15/16. Biggest difference was depth IMO. Not the move from Eriksson to Backes. Beleskey, Hayes, Connolly gave them on average roughly 12 goals and 31 points last year. This year Beleskey, Hayes, Schaller gave them on average 4 goals and 9 points.
A stable back end will get them further than a beefed up forward group IMO. Despite the goals against being relatively good, I don't believe the blueline was particularly good this past season.
Wouldn't even be opposed to bringing back Stafford on a one-year deal. Or even someone like Doan or Iginla, who I'm probably more welcoming than most. Both sporting abnormally low shooting percentages. Still play a hard physical game, even if it's not every night. Versteeg, Hemsky, Sharp, Kunitz, Vanek, Vrbata, Parenteau etc. Depending on health situations. Not looking for long term solution. Cheap middle-6 scoring depth. That's it. Combined with Vatrano, DeBrusk, Bjork(?), Heinen, Cehlarik, Senyshyn, and Gabrielle there should be enough to fill out a more than capable top-9. Not even factoring Hayes and Beleskey performing at/near their career norms.