I've had theatres  for 15 months now, one standalone and one as part of a surround setup. On a standalone basis, the Theatre is mighty capable with respect to the sound image (height, depth and power) it produces. It does seem a little more pointed / built for modern streaming than previous BVs - it can only control 2 peripheral devices using PUC (as opposed to 4), and sound wise it seems to sing with Atmos and Dolby Digital+ content, but less so with older codecs like PCM and Dolby Digital.     As for integrating older B&O stuff into a Theatre setup, others will know better, but there seem to be issues / limitations here. The current app also does not yet have a TV remote control function for the Theatre, in the way that exists for prior Beovisions - doesnt bother me, but does some. The other thing to think about - depending on how particular one is - the Theater does require / invite a lot of tweaking, fiddling and setting up.  True Image - their own up/down scaler - seems much less useful and relevant with the Theatre. Separate Listening Positions (replacement for speaker groups) need setting up and switching between for Atmos and non-Atmos content.  On older BVs, you could rely on True Image to manage different signals best - whereas now, a user needs to actually switch between List.Positions. Whether any of these foibles apply in your use case, I guess you will know better. But when it comes to its capability when fed a good input signal, yes it does sound superb.