I follow your idea, and use this technique a lot to simulate that sort of ''instability'' that you get with analog synthesizers.
Using subtle and longer LFO rates to modulate pitch is one way to get that, but you can apply that to other parameters to get more life into your patches as well.
Modulating Pulse Width is always a great one, and it does also give a slight detune feel when you modulate it .
Using the Matrix, you can indeed use the different LFOs to modulate different Oscilators, and their parameters.
Some parameters I like to modulate like that using slow LFO rates, or other subtle settings are:
-modulating independent volumes of each oscilators, gives this unstable kind of movement.
- Ring Modulation amount, gives nice movement to the tone..
- Modulate the Oscilator Balance knob.
- Using white noise to modulate pitch is also fantastic
- Modulate distortion amount can sound really interesting as well.
Add these up and use subtle modulations wisely and they can mean the difference between dull sounding patches to really sophisticated sounds.
