We looked most defensively sound when Endo was fit and firing, not because he's brilliant, but because he's good and it's his position.
As everyone knows, he can't play twice a week, because if you don't have a surplus of mobility and athleticism in the first place, tired legs mean being behind the play constantly. We know this not just from Endo, but from the last fucking three years.
So we play people out of position, which even if they do a decent job, isn't great in itself, but greatly sacrifices their higher ceiling elsewhere.
We know all of this and yet we persist.
Good enough is the practice but the team itself has to be at 100% in an ultra competitive league.