I was sure the revealer was going to be METALHEAD. Sure. SUUURE! I was so confident that I filled it in and paused only briefly at the ...
read moreI was sure the revealer was going to be METALHEAD. Sure. SUUURE! I was so confident that I filled it in and paused only briefly at the empty square left at the end. Crossword constructors do all sorts of kooky stuff, I reasoned.

Like convincing oneself that Will Shortz would allow a purposeful blank space in a Monday crossword.
IT COULD HAPPEN!
Monday crosswords should lure in unsuspecting novices — why don't you try this one, oh yeah!, didn't you get such a rush from filling in every box correctly? Why not try another one? Heh heh heh — huh? No, I wasn't evilly chuckling.
Zynga's Crosswords with Friends pushes far to the side of easy-peasy-[Sour yellow citrus fruit]-easy. Every single entry ought to be so gettable that if you can't fill in every box, perhaps it's a sign that you can't actually speak the Englishes. It's not an approach I'd recommend for the NYT, but it does make their puzzles accessible to a tremendous slice of folks.
Should a novice NYT solver be expected to know (or at least have heard of) SARI / NAAN, LUZON / KABUL, IFILL? Yes ... probably? However, having so many of these together risks leaving the newb with a feeling of "This can't be correct." I'd have cut some of these, even if it meant tossing in a couple of (easier to figure out) partials, abbreviations, etc.
I appreciated the attempt at tightness, linking all the metals to music instead of using METALHEAD to describe "anything that can start with a metal." It's a shame that METAL MUSIC isn't a stronger phrase, though, and that the assortment of a band, a song, a musical achievement, and a locale felt only tenuously connected.