I will not comment on Savage and Zidane, did not see the games. And to be honest I don't get excited with preseason games, summer period I try to stay off football as much as possible, especially after last season fiasco I told myself "let's see the first game of a new season".
I believe the reason McFred works so well is because they work hard and cover for each other with a bit of a random movement (as neither of them is a DM), that's why I also think Eriksen + 1 will not work until we get a proper DM who can hold position and cover deep midfield. Bruno in midfield is no-go.
But it doesn't seem like we're in the market for a DM, so I think we will continue playing McFred + some more attacking combos for games where we dominate totally, but somehow I don't see that happening often this season.