Let me preface this by saying that I like my TR-2. It's cheap, functional, and does more or less everything I need it to do.
But...
I happened to go and see Dead Meadow on the 10th, and there's an effect that my trusty TR-2 can't duplicate, at least, not easily.
If you listen to the tune, at about 1:30 the guitarist kicks in a space echo.
http://www.youtube.com/watch?v=gTXf0Rtp98s&fmt=18
I'd love to be able to replicate that effect using a tremolo pedal instead (though if you guys tell me to go out and find a space echo, I won't be too put out

),and be able to either ramp up from a depth of 100% from totally dry, or be able to control it with an expression pedal.
So, any ideas/suggestions?