I've done hardwired interconnects many times.
With a low output MC cartridge, dramatic (I mean it!) gains can be realized by
going from cartridge pins to the preamp in one run. I also had Altec amps
that I hardwired. If you like your cable, you should like it even better
without RCAs. RCAs are poor connections. I've heard of people going
to BNC and some guys trying those ultra high bandwidth ham radio
connections. Speaking of ham, don't forget Ham-Com is coming soon in
Plano. Be there or else!