A canyon map with waterfalls on both sides and beneath those falls add ways to go behind the water to the other side and get to the enemies from there *pants*
Oooh that would look so majestic if done correctly!
I would love to play in a canyon with waterfalls, and just think that large rocks obstructing vision create less lag then trees!
Have a few lazy shallow streams (most not enough to slow down, just puddles really), and nice passages snuck in hre and there, and it would be great! Maybe even have a rocky "bridge" connecting over a pond or something.
Either way, a Canyon map would be wonderful!