as a future feature, consider crowd-sourcing; imagine a small group of users collaborating to build a 'synth'.
asperger, I think that you'll be interested to read this older conversation: http://getsatisfaction.com/livelabs/topics/linking_synths/
Also, on a more recent note, check out the announcement of Read/Write World. There's not heaps to look at yet, but I can see things moving in this direction.
More info: http://bit.ly/readwriteworld