No more problem with the missing addon...
It was the Editor Upgrade 102 which i forgot to load. If you have it, no error message appears!
Here is my test:
1. against AI:
I wrote a script that shows me the "knowsabout" - value of 3 different enemy-groups with different distances and waypoints, one of them searching for me...
Well, if you hit an enemy, the "knowsabout" - value of that group raises up to 1.5. It made no difference, if i used a sniper bunker or not. I think, with distance combat you don´t have a benefit from the bunkers.
Then the group with a search and destroy waypoint above my position:
Surprise! They had a much harder time to find me. I managed to kill some near enemy (with M21 sniper rifle), got some high "knowsabout" -value, stayed in cover, and they didn´t find me. It was better than hiding in normal bushes (and they were running some meters near my position). I cannot say, if this effect comes from the bushes or the bunker buildings. But i would say it is an effective hiding place, when AI is searching for you.
The bunkers with the M2-machinegun brings you absolutly no additional cover (when mounted as gunner).
2. against human opponent:
I only guess how it will be... with all that bushes you have nearly no chance to spot the player itself. Maybe you can spot the bunker and fire shells and grenades against it. I would use all that bushes in every case, they fit very good to Everon and make it much harder to spot the bunker. And, very important is, they are looking much better with them. I think you have to build sniper bunkers for every OFP island, and use the local flora to hide them...
Then i flew above the bunkers with a chopper... Some of them were coverd very good and hard to spot, others i could see from air very easy. Maybe you can improve the cover on the roofs a bit. All bunkers were shown in my chopper radar as white dots.
Although i am not a fan of snipers, if you are building a mission with an important sniper role... these bunkers will be a good addition to it.