Ok so as the proud owner of the best hero in game atm, I must say for a legendary guy he's kinda....weak?
The 157 str makes him face huge armies in battles, but the problem also is that huge number of units can squish him like a bug since he has some of the stats capped. So a suggestion I would have for him would be a quest say for when you reach 60 to actually transform the hero into...well a Hero. Something that would require to use the hero only and would make him say get better stats and army str reduction. A rite of Passage
IGN ingame: Arkantos