We have all played and loved CS:S, so why not build our favorites like cs_office and militia? They are both maps that involve 1 team defending and 1 team attacking, just like in infiltration mode.
We can also make maps that arent designed on an infiltration right out of CS:S, we could have maps based on these ideas:
-a cruise ship
-a cargo ship
-a military base
-terrorist caves
-a Power Plant
-Amusement Park
-Golf Course (attack the Men's Club (lol))
-Wal-Mart
-a shopping Mall
-a school
-osama's compound
-The White House
-A Factory
-An oil Platform
-a Church (intel is Bible or something(?))