Moved the bridges upwards so bots should have less difficulty walking underneath them.
Bot Spawns moved away from walls so that they do not get stuck.
Engineer teleporter locations moved away from walls so bots do not get stuck.
Nerfed the staircase of doom, though it may still be a tad strong of a holding position.
The small roof next to the staircase of doom is no longer a roof.
There is a new tank path that goes through the canal, then across the left side (from bots perspective).
The windows above the roof of the restaurant area have become a doorway and the roof area is no longer nobuilded.
The bomb bot paths through the middle section of the map should be more intuitive to know where they are going to go.
Lighting is now sunset as per request of Hydrogen.

There is an all new hatch area.

Screenshots here, and updated in OP.
mvm_fiori_a60010.jpg
mvm_fiori_a60011.jpg
mvm_fiori_a60012.jpg
fix to make bots work
a little detailing because i was bored
fixed some small things in nav, and some clipping
lightly changed geometry in bot dropdown zone based on suggestion from myself i think.

not loads changed visually so screenshots not updated sorry :(
Remade entire map except for the hatch.
Now supports engineer bots and snipers (i think)
updated screenshots on op.

Zip contains bsp, nav file and renamed mvm_bigrock_advanced1 pop file.
Will cause conflicting file errors sorry! Should all work properly now.
A whole new map. Should be a lot of a bunch better. Pop file should work just fine but possibly not.
mvm_fiori_a40000.jpg
mvm_fiori_a40001.jpg
mvm_fiori_a40002.jpg
A bunch of a bunch has changed. fancy new lighting / skybox.
Not alllll the same texture anymore - only mostly the same now.
Some stuff has changed to be less boring.
The map is much muuuch bigger than before.

Ill update them screenshots for you.
Many (if not all) the issues pointed out by idolon /should/ be fixed in this version, also gave some much needed love to the 2nd portion of the map.
I have removed two of the bomb paths leaving three remaining.

I have updated the screenshots on the OP