I know, it's not the thing that rangers need the most, but just a fun idea I've always thought this job should have. The ability to place traps in the ground(kinda like rangers in FFTA2, just to use an example). It wouldn't even be something new to this game as there are goblins that dig mines all the time! And it could also be used the concept of rear traps that are in abyssea, or something like that. There could be more types, like binding trap, terror trap, simple damage trap, etc...
Well, just a fun idea I had in mind, hope you like it, if not peace! v