There are no plans for an AVB card.
I’m not familiar with aggregate devices being so resource intensive, an M2 Mac should have plenty of power for a simple aggregate device setup.
You can get a 1/4 patchbay and connect that to your audio interface to allow you to change your routing connections as needed. You can use the 8 channels of ADAT I/O simultaneously.
I’d suggest contacting MOTU or one of their dealers if you are unable to find the interface you’re looking for.
