I agree insofar that, at low tech levels, cybernetic enhancement is bound to be an awkward, disfuguring, mentally traumatizing process; however, we are talking about "adventure in the far future" here. Surely cybernetic enhancement by TL 15 would incorporate the manipulation of materials on the molecular level. It is not at all unrealistic to suppose artificial limbs can be "grown" to suit specific needs, be more versatile and powerful than their organic counterparts and yet be virtually indistinguishable from them in appearance. Why not reinforce the skeletal strucure? Why not regrow synthetic muscle? Why not give every Marine an integrated biocomp/pharmacope which would regulate his or her life functions and inject analgesics, coagulants, etc. when needed? Why not give them passive interface nodes (no, they don't have to be metallic sockets) to link with their battledress? Why not, when, upon retirement ALL of those enhancements can be removed and replaced with cloned tissue? My objection to the cybernetics "debate" in Traveller is that it does nothing more than replicate the very beginnings of our present day misgivings over cloning/cybernetics. Surely 3000 years have resulted in SOME new insights, and at least a degree of familiarity. By that point, at that level of technology, we're not talking about some shadowy, ill-understood Frankensteinian super-soldier experiment: we're talking about helping soldiers survive in a deadly environment with the tools at hand. Typically, technology becomes more user-friendly, not less so: in the traveller universe, with the technological level given, cybernetics need not disfigure the body OR mind.