As I've said in my post earlier, adding a small block(Roof) between the two buildings will make it absolutely impossible for people to glitch into the building. You cant get between the two buildings with a helicopter anymore, and when using parachute in combination with c4, you will land on the small roof. I have tested this on the testing server from FinDanger.
What do you mean by "small block"? The only objects that you can add without making the server unstable are the two destroyable bridge segments.
But adding to many of them make the server also unstable at a higher player count.
We could also think of a solution for the hotel outpost, currently people glitch into the building by parking a helicopter between the small wall and the hotel outpost at the south side(I think It's south - If you don't know what location I'm talking about let me know and I will take a screen-shot of the location). You could either also add a small roof connected with the wall but this will result in people parking small cars under it and capping the flag and then the only way to defend your flag is by ground defense. Another option is to remove the wall.
As already described, too many objects make the server unstable. The other problem is, I don't know a reliable method how to remove objects, beside the destroyable bridge objects, from the map.
If you know a method, please let me know.
The main problem is, that you can glitch inside every building, to avoid this completely you have to add too many objects.
Another suggestion I had in mind, I think there should be more active in-game admins which have access to ban/kick players from the server. Lately the amount of cheaters are getting out hand, and the percentage of players cheating is growing.
The problem is even if you add more admins, there are always times (e.g. summer) where many of them do not playing.
Adding admins for just some weeks however is too time consuming.
Currently the only active admin is FinDanger. Batuu and Kinslayer are barely or more likely never online anymore.
Yesterday there were probably 5 people banned because of cheating. Mostly commander cheats(Unlimited supply/Artillery).
If some one uses the commander hack the cheater has not to be necessarily the commander.