Here are some of my own comments on the artwork. IMO, it appears that some serious effort was put into procuring art relevant to the content and the layout was excellent. Overall, my opinion is that the quality of the artwork was high. Here are some quick comments on the individual panels:
Cover Art: Great choice for a War book. Includes weapons, armor, magic, metas, paranormals, drones, vehicles, and action.
Art p.8: Nice use of cyber & tattoos to darken a soccer/football (which is relevant to the Bogota content).
Art p.12: Good use of metas and dark, urban setting.
Art p.19: Very relevant (Sangre trees), and very active.
Art p.30: Nice large-battle scene. Appropriate to title of book and the section.
Art p.38: A little sloppy, but the ambush of the urban mercenary is very relevant to the book in general.
Art p.47: Nice use of metas and good placement with the 'dangerous NPCs' section.
Art p.48: Great art and placement! And scary. Reminds me of a few other gaming books I like.
Art p.52: Active, relevant, creative. With three characters, it could have used an obvious meta (even adding pointy ears to the main figure or making the left more stocky-dwarf-like).
Art p.54: simple drawing, but very relevant and good use of metas and gear.
Art p.56: good addition to mercenary section. violent, dark, big armor.
Art p.58: Good image with Merc facing off against locals. Spider makes this great, hoewver (and uniquely SR).
Art p.62: Another great NPC pic
Art p.67: In-game propoganda posters are a great addition if not over-used. i.e. this is good.
Art p.71: Good use of meta and action. Not a *great* pic, but definitely appropriate.
Art p.74: The occassional nod to the early SR (80s hair) works for me.

I really want to love this pic, but it seems to busy yet unfinished at the same time. Regardless, it is good art with unique characters appropriate to the content (guerilla warfare).
Art p.75: appropriate to content (magic), dark, a little confusing at first. background works, but front image needs a re-draw for clarity on which arm belongs to whom.
Art p.82: Love the drones! These are supposedly so prevalent in SR, but we rarely see them in the artwork.
Art p.86: Unique shot with tree overtaking building, but unusual background choice. Love the drones again.
Art p.89: Good sewer rat shaman shot and very appropriate again (Undercity).
Art p.92: Unique characters, but not sure of the story it tells (may be related to one of the stories on that page).
Art p.98: Yay! A magic user in War! I think this might be the first shot of one. And nice scene layout in the image.
Art p.100: Good scene shot, plus a closeup of an ork. Works.
Art p.111: First impression was "what the ...", but I see it is an attempt to shadowrun-ize bullfighting (the section it is in). Unfortunately, the bull-head looks insectoid.
Art p.112: Good use of metas. Picture tells a story. Another fun 80s hair.
Art p.116: Nice addition of a dwarf & ork (both need a little practice). Maybe not the best shot for a full-page, but still good art for the book.
Art p.124: Very relevant. And a yeti magic-user! Opportunity to tell more story if one guy was running turning to run away and there was a touch more fear on the leader's face. I must like the photo if I'm putting this many comments on it. Nice footsteps in snow, but none on the close side (although that may have made the art too busy).
Art p.128: Like drones. Like the style, but the picture doesn't tell a story. I'm guessing the corporate drones are deciding the life/death of people far away, but maybe someone casually pressing a target/kill button on someone would have been more clear & fun for the viewer.
Art p.131: Everyone's a sucker for good sniper art. Add in a meeting and a sneaky victim and you have art. Throw metas in and you have SR art. A little sloppy on the victim.
Art p.141: Relevant to the content (clearing landmines) and a magic-user. Its not exactly clear on its own, however as to what is happening.
Art p.143: Drones! yay! Good background shot, but seems disjointed.
Art p.152: Another great NPC shot - when will this artist start doing metas?
Art p.158: Great drone shot - and of a very popular drone. Relevant to content (drone-launching mines).
Art p.169: bleh art. Scale seems off when I realized there was a guy sitting on top of the vehicle. Could have used art here that demonstrated specific unique pieces of gear.
Art p.171: unusual style that might look better in color. In black & white I can't tell what is happening.
My critical feedback is not on the art that is there, but on the art that is not there:
1) I would like to see more art that demonstrates new ‘stuff’. War! introduces a lot of new ‘stuff’, and a few pictures would help increase the ‘cool’ factor as well as make it easier to understand. As an example, the picture of the Sangre trees greatly helped me understand how best to describe their “Engulf” power.
2) The overall quantity of art in the whole book seems low. It was one of the first things I noticed. I counted 34 pieces of art (besides the cover) for 179 pages of content. That is only 1 per 5.3 pages. To compare, I did a count of art in other books: