Thanks for putting this out there.

I like the idea of starting with a template rather than a part because, as you say, you don't have to crack the part open to tweak it (and we know how easy Eagle makes *that*).

So on that tack, why not just put the 6-pin ISP header and the other popular stuff (6/8-pin females, reset button, etc) right on the template? I say this because it's trivial to just delete them off at the beginning, and much more work to find and add them later, even if one only uses half of them.

I guess the argument against it is that we'd have to agree with the particular parts that you've chosen (e.g. I'd rather have Xmil holes for my 6-pin header rather than the Ymil holes that you're using). But deletion is just so easy that I think it's still a huge win.

Just a thought. Figured I'd get it out there before it died of loneliness.