As some background, Rangers were originally supposed to have a mechanism for increasing spawn in an area via animal calls. This has never materialized and the ability has gone to other guilds instead.
That being said, it would be a big help in that area if companions were treated as another player-character in a hunting area to help boost spawn. Even better if that extra spawn were focused on the ranger's room. I could also see this working for Paladin's war horses.
I'd also like to see companions that are two-sizes larger than a ranger able to be used as mounts. For example, a gnome ranger should be able to ride their wolf.
-pete