yeah so basically the bottom line isn't that we need a #1 center, it's that we need another top line forward added to the current squad
No, that isn't the case at all. Another first line winger isn't going to hurt, but it isn't automatically going to solve anything either. And if it is a LW'er, a world of headaches.
I'm confused about the point you are trying to make. A collection of players doesn't make a team. Having the 19 best defensemen in the League on your team isn't going to win you a championship. Yeah, it's an extreme example, but it's about how the talent on your roster is balanced.
Fabbri - ????? - Tarasenko
Schwartz - ????? - Perron
Steen - ????? - ?????
We have 5 wingers that are capable of playing in the top 6. Add another winger, great. Just means playing someone else on the third line, or having a winger at centre.
We currently have 5 LW'ers in our top 9 (Schwartz, Steen, Fabbri, Berglund & Perron). Perron is capable on RW, so that helps. Steen and Berglund are not centres though. It hurts their game playing centre, and it does little to help the team overall.
The problem isn't the regular season, it's the playoffs. It's easier to shut down a line without a quality centre, that should be obvious for a variety of reasons.