Made-to-measure saddle

or for a slightly less DIY version

• make a pattern out of high density modelling foam (or some other type of modelling board) of your perfect saddle
  
• get a saddle and trim it down to the bare minimum (maybe a central spine with wings which the rails are attached to)
  
• machine the bottom of the pattern so that the cut down saddle fits in it
  
• make a silicon mould of the pattern *
  
• vacuum cast your new saddle top using a resin *
  
• glue new saddle top to existing saddle carcass
  

• cover if you wish

• if you are serious about this I can probably do the above tasks, it isn't cheap though mind.