I use smoke to cover avenues of movement on realistic difficulty and it works against enemy AI. The enemy when I play on the demo warfare mode do not have x-ray vision either. I do die often but that is because I usually don't have a teammate on position for overwatch.
Also
"when crawling through grass, stop, crawl forward to flatten the grass, crawl back and you will have a clearing, more or less like real life.
have fun.. "
Have you at all read the guide dsyelixic put out? Do you use tactics/teamwork on your mission? Do you assign fireteam, or place markers on the map for planning during the briefing or during mission? Do you know how to use High Command?
The grass is not just eye candy, it is used as cover/concealment. I do not want to go back to OFP/Arma terrain grass, it made the game too easy to pick out targets and camouflage wasn't that useful. Now the sniper suits actually work pretty well and most of the other infantry uniforms when the foliage is rendered.
---------- Post added at 01:58 PM ---------- Previous post was at 01:47 PM ----------
I think I missed the last few points you guys made.
The point about the radial clutter is only about 40yds around you is a good point. The cameoflauge that changes with the terrain is a good idea to solve this problem for snipers with those suits and a little bit sinking into the ground is not a bad idea for the rest of the infantry.
There is no easy solution, though as this has plagued many games similar to this.