I would be willing to pay in the $2000 to $3500 depending on options selected.

If the 990 is $1100 today I would expect all the same input/output options as is currently available on the 990, would gladly pay a $500 premium for the flexability of a card based architecture.

I am assuming no additional cost for room correction/EQ as I believe it is neccesary to stay competitive.

For HDMI switching (4 in 1 out) with analog up/cross conversion and scaling (DVDO level scaling) i would pay around $700

I would be willing to pay $500 to upgrade the current output stage with a tube output stage (preferable switchable like is found on the Cary Audio 303 series CD player).

USB DAC board (multi channel) $150 to $200

i.link board $150 to $200