> It's early days, I appreciate, but can you envisage your MoI driving app being anything like Grasshopper?

Hmm, good question. I've only looked at Grasshopper briefly, long before I started any of this (and I don't own a copy of Rhino, so it was only a very cursory look), but it is probably worth taking another look. I suspect we are both playing in the same space, but I'll make a note to check it out again, and let you know if I find anything worth thinking about in more detail. Thanks for bringing it up...