Total Recall - Potential for Rate Control Question

[ahiddentableau]

I recently finished my Total Recall build and it turned out great.  Now I'm wondering about mods.  The most obvious mod I have in mind is adding a rate control to the mod section of the circuit.  Looking through schematics from other mod pedals and delays with modulation makes this look pretty straightforward: replace R51 with a 1Meg pot and a resistor to set a floor - this is what the Dirtbaby does. 

My problem is that this is so straightforward that I'm wondering if I'm missing something.  Why else wouldn't this be included as an option in the TR project?  Being true to the original?  I don't want to start mangling my build just because I'm failing to see the obvious.  Please advise!

[madbean]

Yes a 1M pot with a resistor in series should do the trick. The DB uses 22k but it also runs the LFO at a different voltage, so you might need to experiment with the value.

As for why not include it in the Total Recall: no way to fit it on that layout!