Shael,I think you're slightly missing the point on Kroos. He'll be playing as a Pivote / deep lying playmaker with two midfielders in front of him pressing the ball. It won't be his job to win tackles and put people under pressure. That's the job of the two guys in front of him. If that resistence is broken, the strategy will be for the whole team to drop back in to a defensive shape, each holding a position. It's likely teams are going to try and hit us early on the break as we'll be playing a high line.
This is a world removed from how Yaya was exposed defensively last season. He was exposed because we were constantly outnumbered in the middle of the park and our two man midfield got outnumbered and overran. I'm willing to bet any figure you like that not a single team is going to outnumber us in midfield next season. I can't recall a game in Guardiola's career where that has happened. Yet Pellegrini set us up that way for two full seasons.
Kroos' job won't be to win the ball back. It will be to take the ball off the defenders, dictate play, set the tempo from deep and hold his position.
Take a look at the Pogba touches video. Ignore Pogba and pay close attention to Kroos. You'd see some disturbing attributes YOU used to complain about regarding Yaya. On multiple occasions, he shoesc no interest in joining in the defensive effort. Watch his actions when Griezmann scores. He just stands above the 18, watching proceedings lime a paying fan.
Not that it was his job to mark Griezmann. But there is Pogba with the ball at the corner inside his team's box and he leisurely just watches.
On 2 occasions you see Hector and Draxler run past him to go hell on defense, Kroos is barely jogging. On the Second it was Can and someone else. He often showed no interest in getting back into play once the ball got behind him.
These are worrying traits. Bit Domalino is trying to paper over it by saying he was playing 10, whatever that means. These are worrying characteristics regardless of where he plays.
Effort when your team is out of position should be none negotiable for everyone. Talk less a Central midfielder.