I wouldn't call this pedal warm or lush. More like corny, or cheesy sci-fi. It's almost more suited for Casio keyboards then it is for guitar.
Upon request here's some gut shots to display the mod I did.
The two toggles squeezed in there
Rate resistor reduced to 1.8 K. you could solder bridge this if you wanted.
Tremolo switch. Theres probably a better way to cut out the clean signal.
Pin 13 of the echo processor lifted. The switch ties pin 13 to pins 11 &12. This basically add more modulation depth. In hindsight you might not need the switch. Just lift pin 13 so it's no longer grounded and solder it to pin 12. With pin 13 enabled, the depth control at about 11 o'clock sounds like the stock pedal would with the depth control maxed out.
Here's the echo processor's data sheet for reference ES56028.pdf