Currently each DSP block can have a maximum of 8 inputs and outputs so it couldn’t handle a 7.1.2 mix. You could possibly do a 5.1 surround version with a single DSP block. I guess it’s possible to make 2 blocks and put them in parallel in a chain to handle the 7.1.2, but this wouldn’t be as intuitive as the plugins, and would be tricky to implement.
