Absolutely brilliant ideas. Thanks MNLO.

I really like the look of Verbos. They've seriously nailed function and form. I'm a fan of the Harmonic Oscillator (and their whole system!), so perhaps the case will take a stroll down that street next.

I'm easy in terms of direction. I suppose one path I'd like to explore is implementing the classic techniques (subtractive/fm/additive etc.) with gritty digital sounds reminiscent of the 80s/90s era of bit-depth/sample-rate restricted technology. Any thoughts?

In all honesty though, I don't want to steer the thread too much in order to hear ideas that simply wouldn't have crossed my mind before. The only real criteria being what have people found to be particularly great sounding and fun to use.