At Ajax, ETH repeatedly had his best players taken from hear nearly every year yet still managed to get a good Ajax squad to the semi-final of the CL and win a couple of Ere divisie titles.
Personally speaking, and some might not agree with this and think Tuchel is a far superior manager, I'd love to see what he could do if given the chance to build a squad and not lose his best players year on year. No one can take away that he's brought discipline back to the squad, got rid of bad wood and brought some fight back into the club.
At the moment, many of his more divisive decisions that gets some riled are due to a lack of depth in the squad and some key missing pieces to his puzzle (keeper / striker / FDJ)
I'm hoping the new regime sees similar and gives him a fair crack