I had this idea for de_mirage and I was wondering what other people where thinking of it.
First, de_mirage seems to be quite balanced as it is:
http://blog.counter-strike.net/index.php/map-data-01/
The idea is to cut the top right corner. This would allow in much quicker rotation times.
It would be mostly in favor of the T's but it could also favor the CT slightly cause they could go quicker for retakes where they push from multiple sides.
The wenis pointing to the top right is for the spawn points so T's don't get in important positions before the CT's.
Let me know what you think!