The only way around this is to use 3 preamps w/ HT Bypass (& digital volume readout) + 5Ch amps + 1 Pre-pro to do all the 5.1 digital processing.
Okay, this is how it works.
For SACD, DVD-A, Blu-ray, HD DVD, DVD, CD, you will use the player's Internal Decoders and DACs. I'm sure someone will come out with a true Universal player that will play BD, DVD, SACD, DVD-A, CD. This gives you the True Purist system.
Now for HD Satellite, TV, Internet Radio, etc., you hook those into the Pre-Pro and hook the Line-level outputs to the corresponding 3 preamps' HT Bypass loop.
Now you have BOTH a Purist 5.1 System and all the new digital stuff.
Depending on your mood, you could go from the Minimalist hardcore Analog guy to a Maximus hardcore Digital guy.
But most people would say just get a Class-A Analog Preamp w/ HT Bypass + a Pre-Pro + Amp.
For 2.0 Music, you have the hardcore analog.
For 5.1 Music + Movies + Everything else, you have the traditional 5.1 Pre-Pro.