Just tried it with my Bayern save. I changed things quite a bit (mainly individual mentalities, width, tempo and droping the Right center midfield to right DMC).
I'm in my 4th or 5th season and had absolutely no wingers (was playing a narrow wingless formation last season). So I had to buy Delofeu, Carcela and the game bought me Oxlade-Chamberlain (came in January) and Andre Ayew. I also had Sigborsson and Gaston Ramirez from free transfer that where needed in my previous tactic.
I lost 2 games (one where my players just did **** all the game, the other one to Barcelona Away)
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Here is when I stopped tweaking the tactic :
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The games around the draw against FC Porto I had absolutely no strikers left (huge injury crisis and a lack of bench depth), and had to play my wingers at the strikers positions.
So it's quite good in both offense and defense =)