I have some reservations about the notion of a Perfetti/Scheif/Ehlers line myself. I think we can foresee that this line would have difficulty filling defensive responsibilities everywhere but especially in our own end. and, would rely almost exclusively on generating offense off the rush (it would be creative as hell and fun to watch though). But there would be a drop off in puck possession while on offense, with the opponent exiting their end with relative ease, possibly on man advantage situations.Bottom line - I 'm not sure we'd see the outscoring you anticipate.
[ To expand slightly, I see Perfetti as quickly developing into the one who is most defensively responsible on this line but not sufficiently to overcome weakness in Scheif as well as Ehlers. But Perfetti also needs a linemate who will aggressively do puck pursuit along the corners and behind the net, to be successful himself]
Just my 2 cents worth.