How about....
Ladd-Little-Stafford
(Ladd and Little can carry a line, and Stafford can play at their pace. This line would be tough along the walls in the O-zone, but might drive me insane on break-outs with Ladd and Staff).
Ehlers-Scheifele-Wheeler
(Zooooommmmm!)
Perreault-Lowry-Burmi
(Could dominate most 3rd lines with aggressive forechecking and dynamite defensive and possession games. Perreault gets to be the sniper on the line).
Petan-Copp-Armia
(You want a youth movement? No way Thorbs sits, and no way that Maurice plays and all-rookie line, but I wouldn't be surprised if this line didn't hold its own by mid-season. Petan and Copp are smart defensively, and Armia is a big, smart player).
I'd love that fourth line but agree that it won't happen. I can't help but think how much more I'd like our roster without Thor. To me he just seems to be there.