I dunno about working at night. There's a lot of residential around the site. I know that a lot of lighting got taken out when they demo'ed the Credit Union. I'm around Anglle a lot, between band (not really anymore) and my fraternity (we meet in Angelle Hall on Sunday nights). There are ALWAYS students around Angelle Hall. Everyone in the music dept has card access to the building 24/7, so there's always students practicing and I have a bunch of friends who, since the internet in the dorms suck, go to Angelle to get online. Last week, with no lights back there, it was extremely dark. I noticed earlier that they had lights installed on the corner of Angelle. The lights might simply be for safety reasons. (Also, the cameras they installed around the building might be worthless without lighting.)
Also, while getting sources for a section on UL's Wikipedia entry for the campus expansions, I found a webcam set up overlooking the work site. It's on UL's housing website:
http://housing.louisiana.edu/residence/taft-hall.shtml