Of course, it doesn't hurt. But if they get shot down, you musn't be discouraged. Keep posting and eventually your ideas will improve over time. If Bill Ferny would be replaced by Mauhur (which already has an interesting rendition, in my opinion, or Lugdush for that matter, some draft on what kind of abilities he would use would be required. Thankfully, Tienety already kindly presented a set of abilities similar to that of Ferny so that's checked.
While I agree that it would be more logical to have an Uruk as a fighting scout hero, Ferny's final ability is important in competitive 1v1, because he aids Isengard in overcoming their ''weaker'' early game. I don't know what the team thinks, but I believe it would be important to have a hero with that kind of ability, especially if you have an adversary that pins you in your base with an early rush so that you can either purchase more defenses or research the Machinery of War upgrade sooner and actually start getting out more combat effective troops, because Isengard will have a rough time. Especially Peasants will do some nasty things to early game Isengard, depending on the map.
All in all, I would agree with this proposal, if some resources benefitting ability would be given to him, similar in power and timing as Ferny, or earlier timing, but with weaker benefits.
Greetings.