It really is an interesting dynamic isn't it. Each player has their own strength and they all bring different skill sets. The possibilities are fun to speculate.
I think the use of Marco, you kinda need to be careful with because I believe if he is not played in the right position, he is a wasted player on the field. At Melbourne, him and Archie play as roving strikers that can sit forward and make the runs or just drop off and let the other play forward. Marco may roam the flanks a little more than Archie as well. Now in the AWs what role do you give him because Wee Mac plays a similiar style but perhaps not as forward lying. Do you have Wood, who is a physical specimen and Smeltz whom is a bit more fanciful with ball at feet with Marco to unleash them in a roaming role? What does that then do for Wee Mac?
