What do you think: should heroes fight on foot or on horseback? Perhaps both? Or should it depend on what background he came from (at this point in our understanding of heroes, that could be anything)? Though it could be from say a ND unit or a Yari Calvary unit using STW terminology.
I'm hoping for it to be based on backgrounds so you'd get a variety of different Hero units eg Hero Cav, Hero Sohei, Hero Naginata, Hero Archers.