I keep a Bontrager tube, an Eklind allen key set and generic tire irons in my kit.
I wear a mix of synthetic T shirts from EMS, REI & Under Armour with Nashbar house brand tights or baggy shorts. I gave up the "I'm a bike racer" look 50 years ago when I stopped bike racing. Small panniers and top tube bag are on the bike all the time so I don't need that silly, hard to reach rear jersey pocket.
I do have a Rapha windbreaker and Showers Pass jacket for those times when I want to look stylish.
Fred G