A hard decision that needs to be done, Guy :-)
My (very little!) experience with ML is by far not as good as with MCL..these multiple, tiny cables, connectors with plastic noses, etc. ;-) Of course ML offers more flexibility...but I'm still happy with the MCL system ...installed behind bricks and mortar.😕
Just an idea: Why not thinking of NetLink? I've had a NL equipped Beoplay V1 TV once, connected to a ML/NL converter and via a 1611 to my MCL-Beosystem. It has been great fun to control a Beogram 8002 record player via App, listening to FM-radio with the Beoplay's speakers, V1's SAT-radio to the Beosystem connected speakers, etc.
But at the end of the day I came to the conclusion that it has been some sort of "overkill". Plus: all these AC powered devices in stand-by mode that have been in use mostly only every now and then...
I came to the conclusion that a simple but very robust system, most rooms are equipped with passive x-tra speakers kits (only two rooms, living room and music room, have independent volume control, local sources, etc).
From that point of view I'd advise to keeping the MCL system....
...hard decision that needs being done ;-)
Cheers,
Alex