Well, I would disagree with all three parts :)
USB never been a consumer format, and Ethernet with all due respect cannot be considered not as premium, nor as office oriented product, especially these days. USB will never replace Ethernet just because they are designed for totally different purposes. I agree that in consumer electronics Ethernet is still rare, which is, I guess, a matter of time.
As for using Squeezebox as a DAC,.. well you have Tri Vista DAC in your system, do you really believe in this option, to use Squeezebox instead ;) ?
USB never been a consumer format, and Ethernet with all due respect cannot be considered not as premium, nor as office oriented product, especially these days. USB will never replace Ethernet just because they are designed for totally different purposes. I agree that in consumer electronics Ethernet is still rare, which is, I guess, a matter of time.
As for using Squeezebox as a DAC,.. well you have Tri Vista DAC in your system, do you really believe in this option, to use Squeezebox instead ;) ?