https://w3ctag.github.io/design-principles/ could morph into this or we could leave that more narrowly focused on API surface and link to it from this

I think the design principles doc would be top of the list on this page but I see the page as more of a list of links - some of which might be to TAG or other w3c docs and some of which might be to other best practice stuff...

I've started keeping state at: https://github.com/w3ctag/wiki/wiki/TAG-Guidance-for-Spec-Authors

Please add links, etc. and then we'll fill out some prose around them.

I think this can be closed; we're keeping this currently at http://w3ctag.github.io/workmode/