Thinking of CV.OCD, but I see rumours of a midi module?

This is really the first basic requirement, but since that is handled by the controller, the MIDI-CV interface really “just” needs to be multichannel and offer a way to assign MIDI channels 1-4 to individual pitch CV and gate outputs. However, for true MPE, pitch bend up to +/-48 semitones, velocity, aftertouch and CC74 would be required. Pitchbend +/-48 semitones it not possible though, because on AE modular we just have 5V, so 5 octaves maximum (probably just 4 precisely). So +/- 24 semitones. This is usually configureable on the controller, so it wouldn’t be much of a limitation at all.