Vintage Synth Repair

Just wondering, has anyone done anything in the field of making MIDI pitch-bend controllers that are, well, beyond the steel ribbon or plastic spring-wheel?

  I have noticed that lead guitar players will bend one or two strings up a few steps and then hit another string that is not bent.  But it is impossible to imitate this technique with a standard MIDI pitch-bend wheel (and did ribbons disappear along the same time as disco?).  

  I've thought about using a dual potentiometer joystick and setting a seperate Pitchbend channel on each axis. Then having a controller get each note played from a keyboard and alternating each note between the two channels of the joystick.  First note gets channel 1, next note gets channel 2, next gets channel 1, then channel 2, etc...  This might allow some advanced pitchbent sounds that imitate distortion guitars, it might be just junk.

  Has anyone tried anything like this?

  Now I'm sure there is some obscure European company made up of super-rich/super-hip synth enthusiasts who have exactly what I want (and was used on the rare classic "KlangenBäupfferSchagnatenMachte" album from 1982) that I can order direct for only 950 Euros.  But I have no money.  Good AVR and Arduino programming skills, lots of chips and old equipment, but no money.

  Thanks, any input or replies welcome