Cool!
I was daydreaming about a simple wet/dry circuit using something like the JLM Dingo using the vca's for the gain/fading... could be a nice solution with some nice discrete opamps like the APP992 to include in outboard dynamics processors.
On another note, I'm racking up my finished "interpolating scanner" (based on J.H. Haible design) which is a curious spin on the crossfader idea; rather than fading between two channels, it can "scan", or fade, many (9 in my case) channels with cv control. Ofcourse meant for creative uses and not mastering (duh) but a cool concept nonetheless.