My biggest dislikes about JA are the animations. Some of them just seem really poorly done. Like the running animation. Anyway...
From what I understand it's an early work, so I'm probably going to over-analyze and nitpick too many things. I may also be trying to analyze it more from an artistic point of view, so, uhh... there's your warning?
The beams of light in that hallway really don't do it for me. If it were really dusty, dark, or foggy it might make sense to have a visible beam of light, but it looks pretty well-lit there. It may also be because they seem a bit too close together. If that's the lighting you're going to keep in that area, I think it might look better with some sort of standard light shader, just not the rays of light like it has right now.
The outdoor architecture looks alright. In general, some of the textures need replacing or need to be resized. For example, the holes in that grate-like texture are probably big enough for the character's legs to fall through.
I like the first and last shots from the newest batch. I think it's probably the atmosphere. In the first shot, the sign on the left side of the center building detracts from the appearance a bit. In the last shot, the building in the bottom-left corner of the screenshot seems too bright compared to the rest. It's probably just me, but I think the area would benefit from having the sign as the brightest light source.
The area in the second shot from your second post also looks pretty good to me, aside from a few of the textures. I think I generally like the open areas. But, aside from the dark-ish landing pad area, the inside area and the back alleys don't seem
as good to me.
Looks like it's a good start. I hope you keep on it.
Yeah. Now I kind of feel like installing JA and Radiant again.