So, the trailer for The Hobbit got me rewatching the LotR trilogy, and it struck me that the elvish horse nation feats are generally a good match for the Rohirrim. Seriously, you'd even straight out keep the name.
Thing is, I've always thought they weren't really very good as species feats. Looking at their benefits, there's nothing in them that depends on or modifies your physical nature. Really, they're either a Gear chain -- because everything except the resistance is linked to gear -- or, at a stretch, Style.
Given that I also feel the whole electrical damage thing feels oddly bolted on, I think there's room to reinvent them as Style feats
The riders of your culture come together as a roaring torrent, sweeping all before them.
Prerequisites: Any non-beast, Strength 13+, Wisdom 13+
Benefit: You gain the Ride (Riding Mounts) focus and a 20% discount when purchasing mounts and mount-related gear (if you already possess a discount with these purchases, it increases by 5%). Also, while mounted, your melee attacks gain the massive quality, you and your mount are considered to share a common species for all your character options that target that value, and you both benefit from the improved stability quality (see Fantasy Craft, page 234).
Elevated above your foes, when you ride forth they tremble as though the land itself were rising up to smite them.
Prerequisites: Horse Nation
Benefit: Any mounts you purchase or personally gain as a Prize gain the exceptional specimen upgrade at no cost (see Fantasy Craft, page 169). Also, while mounted and taking a Run action that will end adjacent to 1 special character or standard mob, you may force them to make a Morale check with a DC equal to your starting action dice x5.