non-rant;
is anyone aware of a fairly comprehensive JavaScript/css assessment for hiring a junior dev? just want a boilerplate assessment structure that I can expand on. it would be an untimed take-at-home.

I guess it depends on the area you're hiring for. Making it take-home should allow it to be a little trickier than on the spot imho. I think JS/DOM might be more applicable.

You could try giving them a dataset and D3 and ask them to make it pretty. D3 incorporates a lot of what (I think) you're looking for and copy/paste won't get you far enough to fake it. www.d3js.org