Lol sorry I missed that post. But cool, that sounds nice!
I was thinking... Judging by the wet pools it looks like it just stopped raining. Or are they pools? If so increse the spec so it actually looks like water. Right now it looks like some matte surfaces that potentially could be water. Some wet papers and glossy trashbags lying around around the dumpsters could work well with the whole 'recently stopped raining theme'. To further increase the sense of that it just stopped raining, you could add some water dripping down the fire escapes. That might look really nice.
I dunno... looking at the scene I think it's hard to judge what it like weather wise. The cobbles look really wet but the brick walls look dry. Better to be consistant with your materials.
Also, FogVolumes do wonders for lighting. It breaks up some unrealistically dark corners just makes it look cool. You got some weird edges around the sidewalk next to the door. A large FogVolume with fairly low GlobalDensity (like 0.01-0.02) could help you get that out. Or simply just change the direction of the light slightly so it doesn't interfere with the sidewalk. Either way I think you should add a FogVolume.
Gonna follow this because it looks really good so far!