At first glance, Carlos Queiroz is someone who has been left in the previous decade, IMO — he was a good coach (not scout or technical director) once, but has managed Iran for 8 years before the latest Colombia appointment and is going to turn 67 soon...so his current performances might not match his historical accomplishments with United in the late 2000s. Will sound ageist but considering United need a fine-tuned and fresh long term vision...and someone who can see things through over a period of 5-6-7 years, we should look for someone who's much younger/hungrier and more in-tune with data analytics (for reference Galliani was also considered out-of-touch with contemporary football by the time he reached a similar age even though Milan won 5 European Cups with him as the Chief Executive).
Football evolves and moves on, and I doubt Queiroz can radically improve the club when you look at his track record in recent years. Someone like Overmars would be a much better appointment when you analyze his resumé: procures promising talent (De Jong, Ziyech, Neres, Lisandro, Onana, Tagliafico, Sánchez), associated with a positive ideology and only 46 years old...so he could drop deep roots at the club. Van der Sar as C.E.O. (give Woodward the boot) and Overmars for D.O.F. would be sooo good, though not very realistic under current ownership...and also, Overmars has business interests in Amsterdam so he might not want to move or maybe he wants to become their version of Zorc and is dedicated to the cause, dunno.
Another organisation we should be scouting for backroom/administrative talent is Red Bull: they are among the pioneers of data analytics, identify/develop a ton of talent and make progressive coaching moves — like appointing Rose/Marić before they moved to Mönchengladbach and now Nagelsmann from Hoffenheim.