These work pretty well. There's still some pretty bad names in there though. Basically anything that is a link you can call A link/B link. And use more mid shops/b shops for example on strike. Re-use of names in my opinion is good, so you don't have to learn more names. So these are pretty average examples.
Crash
http://www.elletee.co.uk/images/cod4/cod4maps/crash.jpg
Strike
http://www.elletee.co.uk/images/cod4/cod4maps/strike.jpg
Crossfire
http://www.elletee.co.uk/images/cod4/cod4maps/crossfire.jpg
Enjoy!