Sequencer mod?

[zaxza]

I was thinking how using the sequence part of the dig dug would be an interesting way of controlling an effect as a standalone expression pedal replacement. I'm not sure how easy it would be to change it but looking at the original dig dug .pdf i thought that if you were to get rid of the random section and the wah section you'd essentially be left with a sequencer.
So, if you wanted to control a single pot of a pedal e.g. a drive pot in a distortion pedal how would you go about it?
Could you simply wire up the FX3 on the sequencer board to to where the drive pots 1st lug would be? It's all above me at the moment, as i'm still trying to understand how the circuit works. I'm not totally sure if i've explained exactly what i mean. It's just an idea i've been thinking of for a while and i've been trying to do some research into it. thanks for any advice and explanation.