Different tree types. And more randomization in the placement.
if it's a TDMstuff on the ground is neededTake for example that new server that was recently hosted, Sord's Zombie Survival.You can dress all white and stick out like a sore thumbor you can go all dark green with brown peglegs and be able to blend into ANY bush.You need stuff for people to hide in/behind.
trenches, bunkers, buildings etc.
It's kinda obvious