Fafafion. Agreed. "Specialty termination manufacturers are using better materials in terms of electrical conductivity, resonance control and minimizing the introduction of capacitance issues.
Personally? I don't own an interconnect that doesn't use DH Labs "Ultimate RCAs". I absolutely subscribe to the logic of quality connectors.
However, for speaker? K.I.S.S.
Of course, the physical/mechanical connection capability is the most demading element in this equation. But how much you wanna bet that removing those wonderful connectors you speak of, wouldn't actually reveal a higher degree of as you stated?:
"the 3-d image , the emotions of the performers will be missing and the ambiance of the hall will also be gone.These are the things we hold dear to our heart,andcan easily be heard in very transparent systems."
A properly silver "tinned" speaker cable will have a higher degree of susceptibility to oxidation. It will require regular cleaning as ANY connector. However, keep in mind, when using a high quality connector.... It still needs a method of physical connection (solder joint). That becomes the area of concern and no different in terms of maintenance
than any bared end.
And ultimately? You will need to be comfortable with the signature that ANY termination component will impart on the sound in which the unterminated cable will be devoid.
My favorite sonic signatures are the ones you can't hear. :>)