Recurves. So many awesome knives have just the gentlest of recurves that turn sharpening from an enjoyable hobby into a chore.
Textured G10. I don't need a coarse abrasive on the handle to keep a knife in my hand.
No flipper. I'm just so used to flippers, anything else is awkward for me now.
Bead blasting/sand blasting. Rust/scratch magnets. Also, I'm really not a fan of "snail trails." Stonewashed Sebenza, anyone?