I'm playing an Unarmed Fighter/Warblade using Dragon Style. My DM loves 3.5 material so we're also using it with Pathfinder rules. My Tiefling has the claws racial trait and can get regularly buffed. Have access to on-demand Heroics spell (free Fighter Bonus Feat, 10 minutes/level) and Enlarge Person (DM ruled I can use it on myself).
I'm looking at taking both Improved Natural Attack and Superior Unarmed Strike (Tome of Battle). I've got Feral Combat Training with my claws. Tell me I'm reading the feats correctly and that they all stack together to give me a nice pile of dice to play with.
I'm playing at level 12 right now, going into 20+.