I like this map but there are bugs:
Blocking volumes in the main street of when shooting into the stores and to the other side. My rockets would explode before getting there.
Improvements:
Are the textures of the magazines, computer, computer box and games from photos? I think you can find high resolution pictures of everything you need online but you need to photoshop those into usable textures. It looks crooked or not aligned. I know this is a lot of work for you.
There are parts of AKIBA that is blocked off but invisible. You should put something there visually so people know those areas are not accessible. Such as boxes, trash cans, vending machines, cars, food stands, otaku items and etc...
The surrounding streets of AKIBA is really far away. I've been to AKIBA a lot and I know the streets across are wide but for visual appearance, can you move the surrounding stores closer? Especially LAOX since that street is very wide but it looks bland since there is nothing there. or maybe put additional brushes, models there to make it look better. You can of course set things on fire to keep the atmosphere. Fire may be good for night version of the map to add surrounding light.
Lighting inside one of the buildings on the 2nd floor is bad. It is the building where the specimens can jump up into.
Overall, I love this map and it can improve with fixes and more time.
Maybe a night time version too?!
If you will make more maps based on Tokyo, how about Shinjuku area just like Yakuza Dead End ?! That would be incredible.