I also get the impression that this is the plan. Expect it to be 4-3-3 in attack and 4-2-3-1 / 4-5-1 when defending. Could be very interesting.
Pre-season Friendly or not, that 2-2 was a decent effort against a good Bundesliga side. On the behind-closed-doors game, that was the second eleven (?) against a strong Hoffenheim team, so still not so bad.