I think the worry for me is he will bring in ordinary Dutch players (like Ten Hag did) and they fail to make the step-up. A lot of money could end up wasted on Europa League standard players (which is about where Feyenoord are)
I don't think that will be a problem- at least not from what I can see.
I also think- not saying you do, but our fanbase hasn't transitioned to the modern football-structural paradigm yet- thinking within this modern structure and as a consequence, they mistake the role Ten-Hag fulfills and what Slot would fulfill.
United made the mistake of appointing Ten-Hag as manager, whereas we've appointed Arne as Head Coach. From what I gather, Ten-Hag's misfortune at United has a lot to do with the wide area of responsibilities he is expected to attend to, which is why he's basically "unraveled"
There is a difference in "powers", responibilities, accountabilities etc.. between the two, a fact which I'm sure you are aware of; and according to my understanding, Slot's not going to burdened with much beyond his ability to coach.
This would also mean that he will have limited input - as one part of the team, when it comes to "procurement". Based on our recent history, that's a good thing.
We have a well-defined profile of player- whether for the first team, or the academy, driven by analytics- and that restricts the risks in player acquisition.
I think we're just going to go ahead in that dept as merrily as we've been doing since 2015. In the end, we will only sit with players that fit our system exactly.