The summarised the PRO and CON(s) after a long discussion are:-
PRO
- Using a DAC, your favourite sonic signature will be preserved
- Not necessary to use a expensive and/or hard to repair player to act as transport
- Unlikely to break down often as a DAC does not have many physical moving parts
- Can replace the transport with a decent DVD player that's pretty affordable nowadays since DVD players are no longer the flagship players
- Can be part of a AV setup as long as your Audio-Video equipment has a SPF/DIF output eg android box, streamer etc
- Much improved audio presentation as a DAC hifi component has been optimised for the sole purpose of production of audio only eg best example is the Marantz CD-94 being enhanced with CDA-94
CON
- When your favourite CD/DVD/transport dies, the cost for repair and/or replacement will be expensive
- May not be able to rescue the player due to way most companies operate today eg stock min parts
- Need to evaluate many players before you can find a satisfactory audio quality compromise (if not repairable)
I look at it is a way to "future proofing" my setup and preserving the preferred audio signature.