I don't own the 990, or any Outlaw equipment but if wishes were easily granted I would like:
A more attractive and functional front panel. I like the layout of the Sherwood P-965 and would like to see a similar design with hidden door to functions and also add a row of direct source selection pushbuttons incl 7.1 direct. I would pay up to an extra $10-15 % for that on the unit cost.
Also HDCD decoding would be nice but wouldn't pay too much extra for it. Maybe 5% more.
Ability to configure preset input levels on all sources.