Not liking your bike or gear

I have a variation of this problem with an old steel cx frame which is great to ride but has sooooo many fucking niggles that I cba to get it properly sorted and consequently don't ride it out of frustration:

• canti mounts too close to easily use modern cantis
  
• BB threaded
  
• no bosses or mudguard eyes
  
• gear bosses that no known ferrel correctly fits
  
• gear ratio too high (my fault)
  
• campag dropouts don't have the cute little screws (shouldn't matter, but it bugs me)
  
  

I've found hacks and workarounds to a lot, and it's currently in SS, but it's still fucking annoying. I also feel like if sunk too much effort and money into it over the years to ever let it go. I'm actually now looking into how to braze to remedy some of these issues.