It absolutely should support playing from a network share. Requiring DLNA will mean a lot of people will not select it relative to something like Sonos that can play from a network share.

I don't get why so many companies support UPnP, and the media renderer related services, and don't support the AV Transport service's capability to just point the player at a network based file. Without that, a lot of systems will have limited ability to integrate it, because they can only serve up files via a network share.

* Of course this assumes that Heos doesn't support the direct setting of the AV transport URI, maybe it does in addition to DLNA support, but so far all the devices I've seen that implement DLNA don't support the simpler (and far more widely supportable) scheme.