I think that Bill Ferny isn't fit for Isengar as scout. Bill Ferny never fought for Isengard. Also, Bill Ferny is one of the least favorite hero in mod.
i have idea for new more fit scout hero for Isengard:
Mauhur
(http://img3.wikia.nocookie.net/__cb20130730180240/lotr/images/6/69/Mauhur_Uruk.jpg)
Mauhur is a small character from the book and movie. He was a standard hero in the old version of edain mod. But now he is only as summon for Ugluk on level 10. I think Mauhur is more fit for scout role in Isengard. After all, he is uruk-hai from Isengard. Bill can stay in mod on special maps or something like this. 8-)
Mauhur abilities:
Level 1: Toggle Weapon - Switches between axe and crossbow.
Mauhur has crossbows in old version of mod. This will be something unique for him. if I know no one hero in edain used crossbows. :D
Level 1: Gather Scent
Mauhur gathers the scent of the hunted enemy.
Mahur and his elite scouts have 200% visition range and 25% speed for 20 seconds.
Level 4: Man flesh
Mauhur smell flesh of enemy hero.
For a short amount of time, the closest enemy hero will be uncovered.
Level 6: Mauhúr's reinforcements
Mauhur temporarily summon four elite scouts with axe.
Level 8: Hunting trap
Mauhur set a Hunting trap to selected area.
If Enemy unit and hero step on a trap, gets medium damage and -15% move speed for 10 seconds.
Trap can have this design:
(http://thumbs.dreamstime.com/x/rusty-trap-11656054.jpg)
Of course, Ugluk needs a new ability:
Level 10: Escape from encirclement
Ugluk and his guys fight to the last man and trying to get out form encirclement.
Ugluk and uruk-hai units nearby are immune against knockback and can't be trampling for 15 seconds.
What do you think about this idea? 8-)
Maybe I have better idea for Mauhur's trap ability:
Level 8: Hunting trap
Mauhur set a Hunting trap to selected area.
If Enemy unit and hero step on a trap, gets medium damage and -15% move speed for 10 seconds.
Trap can have this design:
(http://thumbs.dreamstime.com/x/rusty-trap-11656054.jpg)
What do you think? 8-)
you can use Mauhúr as a scout this guy (http://vignette3.wikia.nocookie.net/lotr/images/0/0d/Mauhur_portrait.jpg/revision/latest?cb=20130731121549)
or they can make this guy Lugdush (http://vignette4.wikia.nocookie.net/lotr/images/7/7f/Lugdush.jpg/revision/latest?cb=20120626162619)
they are both good looking and i think they will fit in isengard better than Bil Ferny