I mainly use this player as a music server / transport in a purist 2 channel system. I connect it to my system via the player's PCM output. For this reason, my concern with which audio options the player passes through PCM Out are probably greater than those who have their player digitally connected to an outboard processor / receiver (which offer their own audio processing.)
Having spent a little more time with my new 980H I've discovered that, in addition to the Channel Trim option, the Front Speaker Size option is not output through PCM Out either. If this feature was turned on, it would be useful for adding a sub-woofer using the player's internal cross-over to send a high passed signal out to the external DAC. The sub-woofer could then be connected to the player's analog Sub Out jack creating a 2.1 system.
My Cambridge Audio player (which reportedly uses the same chip set) has all the audio options available through its PCM Out and it makes for a very flexible player. Unfortunately my Cambridge doesn't offer the USB input which I find so useful on the 980H.
It seems logical to me that the more features the 980H could offer, the more attractive the player would become to potential buyers... especially when the features are already built into the player and just need to be turned on via a firmware upgrade.
Hopefully if further firmware is released for the 980H, it will turn on these audio options. Please, oh-please.