But seriously, if you like the ride of the Feather, keep it. Upgrade the contact points, seat, pedals/cleats, bars, levers and stem until everything feels comfortable and right. If it feels that way now, leave it until it needs replacing. Stem? If it puts the bars where it feels right to you, the best replacement on the planet will only serve to improve your climbing because your wallet will be lighter. Likewise the handlebars. Fuji seats are usually mediocre and a good place to spend money. See if you can find a shop that will let you rest ride seats for a week or two and return them for another if it's not the best for you.

Pedal/cleat systems are a big deal. Talk to people but take your time and look at how you ride. I use traditional pedals, toeclips and slotted cleats as were used 100 years ago because with the straps pulled tight, my feet do not come off the pedals at high RPMs downhill, even if I do uncleat. I also occasionally fall over at low speeds because I forgot/didn't have time to release the buckle. Not for everyone but I know that if I ride clipless and ride the way I love to, the day will come when I unclip at 40 mph. I don't want that in this lifetime.

Nothing wrong with a steel fix gear frame at all. Gives you steel track ends for your rear wheel, by far the best material there. A sexy fork that looks completely right on a fix gear. A chainstay that will be undamaged except scraped paint after you drop the chain at speed. No, that should never happen, but if you fall in love with fix gear riding and it becomes your go to bike, well things happen. I fell in love 95,000 miles ago. I know.

Ben