So, you are saying you have the Baron going on his own killing things?
As far as I know werewolves do not have marksman, so they would attack a strong unit of your army, and if I still remember well, they are really weak, so the wearwolf would lose the fight.
Sometimes he's on his own, sometimes with guards. It depends on the current status of my game. The letters in bold make my point. The point of getting the Baron is to make a troop of werewolves, not watch as they suicide themselves on your own units. Here's how it works now:
The Baron attacks and kills a unit. A Ravenous Werewolf is spawned. He runs off under AI control and, at some point, attacks an enemy unit. If he wins, he becomes a Blooded Werewolf under my control. Now I have the Baron and a friend to go with him. Now repeat until you have a party.
Here's how it would work under your suggestion:
The Baron attacks and kills a unit. A Ravenous Werewolf is spawned. He immediately turns and attacks either the Baron or a unit that is traveling with him. The Baron is much stronger than the new pup and, more than likely, any units traveling with him are Swordsmen or Axemen with a few upgrades so also stronger than the new pup. So what becomes of the Ravenous Werewolf? He is dead and one of my units has a few more xp.
The Baron is an expensive unit to build for where he is on the tech tree. He also doesn't have the Hero promotions so he doesn't gain the 1 xp per turn and can't get some of those extra promos. Under your suggested Enraged, the Baron would be nothing more than an overpriced unit that you have to fight 30-40 battles to get him the same amount of xp as heroes with similar strength that cost less.
Let's also not forget Lunatics and other units that get Created with Crazed or Enraged. I'd bet that at a minimum, 75% of Enraged units would end up attacking your own units. So you either lose the Enraged unit or you lose a unit that the Enraged unit attacks. Either way, you are throwing away massive amounts of production.
A system where your own units attacked you would be even worse than it is now.
The way it is corrected now will cause more problems in the future... Oh, are you seeing that impossible army of wearwolves comming that way! OMG!..And look!!! A hord of lunatics at our gates!!! WE ARE DOOMED!!
A) I can see that the spawn rate may be too high for Werewolves but lets test it first just to make sure. If it needs adjusting, Kael can always take it down a notch.
B)
.40a-h Enraged - Build 12 Lunatics for 1440

, cast Loyalty on them, send a Crazy army against your enemy with +1

and +20%

, attack enemy city with 12 Lunatics.
.40i-p Enraged - Build 12 Lunatics for 1440

, watch as they start running around all over the place under AI control. Watch them attack and usually die.
.40q Enraged - Build 16 Lunatics for 1440

, send a Crazy army against your opponents without +1

and +20%

, watch as 4 run off on their own and attack and usually die, attack enemy city with 12 Lunatics.
So what's the end result? You attack the city with the same number of units but those units have 1 less movement and less strength. In other words, everything is almost exactly the same, just without the free promo.