There is plenty of potential here. From Lone Strikers to Link Men these allow you to create effectively two different styles of play for home and away fixtures and are necessary add on's in some cases to meet the 3 times rules.

This is definately an area where the GM should work productively as these type of players make your particular game more unique.

Good Luck.

 I'm very curious to hear more about the specifics of what these "Special Players" would be all about. One of the goals of United is to simplify the manager's experience, so I would want to make sure that the addition of these types of players wouldn't make things overly complicated.