Eh, when we've played a 4-1-4-1 with defensive FBs or a 4-2-3-1 with Can in the double-pivot, it's worked well. Switching to those shapes drove us to tie up the Belgium & Ukraine matches, dominate Peru, and would've been successful in Qatar if Neuer had broken his leg before the tourney...or we had started Füllkrug/Moukoko.
Not the same as having a title winning core that you're experimenting with, but a title winning core wouldn't require as much experimentation. Ultimately these past 6 months since the WM were the perfect time to experiment with shapes we don't know work, so I don't mind the back 3 trials this window.
But the attitude, selection, and formations will need to be much different the next time the NT gets together to start winning the crowd back.