I'd like to see wooden crates instead that computer stuff. Some storage crates makes more sense here I think.
Now that you're changing original levels, perhaps a wider corridor wouldn't hurt either. Lot's or Q1 levels have too narrow corridors in my opinion.
I'd like a shorter wedge, so there's more horizontal space here.
here's a small wall ribbon that should be removed. Near the Quad area.
Another weird ledge that should be removed.
I would also remove the Pentagram... what's fun about an invincible player...
Further you made some nice changes but I still don't know how this level plays cause there was no frogbot support (didn't feel like changing that myself). Personally I think the original levels could use a touch up indeed, but especially when it comes to small corridors and other stuff that can be annoying sometimes, like getting stuck because the levels are not clipped out like in quake 3. Die hard QuakeWorld players may not care, but people who come from Q3 love smooth walls and stairs that don't stop your straferun. Stairs could therefore also use an invisible wedge clip brush so it becomes an invisible ramp like in Q4. I can imagine QW players would do all kinds of cool jumps from that too.