Updated from v0.1:
Remake the beach
New house in LA Hills (save game house)
New parking lots in downtown
Finish the main Av.
New Mad dog house
New Pier
New Av. close to Airport
New houses in LA Hills
New Forest in Los Santos Vagos territory
And much more I don't remember right now
Some places I choose not to modifies because they were mission related
The next Update will be the complete Los Santos (ballas territory and Grove street)
Any bugs or ideas report back here on comments.

Credits:
2002juing