More balanced in the sense that we've got the necessary personnel (& backups) to play the formations we usually tend to play. Which wasn't the case in the 2nd half of last season.
But I can obviously only agree that the defense does seem weaker. A lot will depend on Rugani's progress, I guess.
Personally, I still believe in De Sciglio. Then again, I can't say the same for Benatia.