As time has gone on I'm less worried about our key forward prospects and just want us to load up on dangerous forward/mids and play a hard running game. If we go down that path I could see Bruce/White/McKenzie* being more than capable of holding down the forward line even if they aren't superstars.
Have Petracca, Billings, Steven, Armo, Acres, Membrey, Eli, Minchi and others rotate through the forward and middle while the 3 talls provide options and keep the defenders honest. Hell, if we really wanted to go nuts I could see Bruce and McKenzie sharing the relief ruck role kinda like Trengrove and Westoff did at Port which would let us keep another spot for a mid instead of having 2 rucks in the squad.
*If we get him. I do hope we go with the Petracca and McKenzie combo.