Originally Posted by moon

The other difference in proffer to displace vs displace is who gets displaced. If envoy displaces 1 FO from say the ORD 145 and the senior pilot in that equipment proffers to displace. That senior pilot is displaced and not the junior ORD 145 pilot.

So if someone is wanting the upgrade they should put in a proffer to displace. If someone is hoping to hold off on the upgrade and hoping there's enough qualified pilots junior to them they should put in just a displacement preference.