It also gets guys like Greg Olsen traded and overspending for Brandon Emanualus or desperate for a Travis Kelce lite and spending a shit ton on Trey Burtons. VJJ looked like a "scheme" pick as well.
A great example of a pick made for the coaching staff was Joe Montana.
3 QB's were drafted ahead of Montana, but Walsh wanted a smart QB that could go through progressions and an arm accurate enough to get the ball to the open man.
That worked out pretty well.
Edited to add, I don't know if the current Bears staff is is worth drafting for,
IF they are then draft for them
. IF they are not, fire them and start over.
The point is, get the staff you want, then draft for them.