Hopefully, Zetterlund can be that upgrade internally. I'm not saying he is a first line winger, but it's rare for first lines to have 3 true first liners together.
The way that I look at it is that we have three pairs, Tkachuk+Stu and Cozens+Batherson, and Pinto+Amadio. Right now, Giroux and Perron are both complementary guys on those top lines, but they are also both older players who are likely to decline.
I don't think they would ever walk away from Giroux, and with Zetterlund having a decent case through arbitration, I don't think we have room to add another forward cap wise.