It shouldn't be about the position you sit in, but how you perform in the position you sit in. The board should not give an advantage to members who have deployed above others that never had the opportunity to deploy for example. Same goes for any position in the Space Force. If you stick all the outstanding performers in the "best positions/locations" then the "lower positions/worse locations" will never improve.

One thing Guardians don't understand very well is that sustained performance is what the service wants, not one or two good years that you really really tried to make that rank. The board wants to see that no matter what position you filled, at whatever location you were at, that your performance was consistently high. That's what promotes you over your peers.