If a player chooses Prometheus in Classical, then Valor helps to make Hyperion more useful, particularly when facing a heavy Myth Unit assault. As is standard, I always use Valor when a Citizen falls into range so that I can gain a Hero Citizen too. In my second game (as Oranos) I used Valor after claiming my 3rd Town Centre in Heroic and sent my Hero Citizen off to chop some wood whilst my army split off and stood guard near an unclaimed gold mine. As my Citizen reached the wood, she ran straight into the path of an enemy army consisting of a handful of upgraded Hoplites, a couple of Toxotes and two Heroes. I thought my Citizen was done for as it was quite a trek back to saftety; nevertheless I turned her around and sent her running. Sure enough, the enemy army went after her.
Amazingly, she reached safety with nearly all of her health intact, despite being constantly attacked by her pursuers. I took more notice of my other Heroes and sure enough, they took very little damage unless heavily outnumbered and most or all of my Heroes would survive some pretty vicious battles. Even when moving, Heroes regenerate health incredibly quickly once Heroic Renewal is researched.
I've concluded that with Hyperion you are actually able to field more Heroes because you save more resources due to the rate at which your Heroes heal (meaning that you don't need to replace troops which are always more expensive for Atlanteans). This is particularly true if you choose Prometheus in classical.
Another sneaky trick that I discovered was to pick out troops on the battlefield that are injured and turn them into Heroes; that way they heal up really quickly and you gain another anti-Myth unit into the bargain.
Does anybody actually know how quick the regeneration is with Heroic Renewal? I've seen all the other forms of healing offered by this game but I've never seen anything with such an obviously fast rate of recovery (apart from Restoration, of course).
Thanks for the time, folks! Any observations?