In another thread TheKingofBlades mentioned having Robin Hood style units - that got me thinking...
It would be awesome to have a box set of Heroic Units - Units that are only slightly better than normal, take hits like any other unit, but who have a special ability that activates on the roll of a Lore Symbol.
Rangers of Sherwood - Green Banner unit, can move 2 and attack, rolls 3 dice when attacking, may attack up to a range of 3 hexes, and isn't limited by the restrictions of forest spaces (forest spaces count as plains for them, but forest limits still apply if the unit is being attacked while in one). Lore rolled also count as hits in ranged combat.
The Stalwart - Blue banner spear unit, behaves exactly as a blue banner spear unit, but also hits on Lore when battling back.
The Biting Wind - Green banner Goblin lizard riders, may, for 1 lore, roll 4 dice minus the current unit strength - on a lore they ignore any terrain restrictions for any terrain piece on the board when moving through or batting from it.
I'm sure there are lots of other examples - each unit would be *special* and players may only have one of each type in play (so no two Rangers of Sherwood units running around). These listed above are only off the top of my head as I write this, but I'm sure that more and better thought out units could be conceived and be a lot of fun to include in play.