in my experience a 4x dac 3x adc setup is very nice. (note that the dac is already dual, so 4x dac = 2 modules)
You can layer the several ADC patterns with offset, so that you get even more complex stepped grayscales from the dac. With a camera feedback as input this will become very interesting because the base signal is wobbly and dynamic.
here are some pics from a 4xdac 2xadc liveset (with feedback)
I also really like the logic castle (multigates), you can slice and dice video signals .