To make trades easier if we could do a search for what teams are looking for what. For example if I want a 1-2 defenceman, then I could search for all teams with a player matching that description on some team's trading block. As well, if I'm looking to move a 1-2 defenceman then I could search what teams have that as one of their transfer needs. Might make trading easier.
Also when looking for players, if I have "Filter out unrealistic targets' then players in leagues higher with one way contracts shouldn't be shown.