Since there's only ONE construction PDA in TF2, I think that the LED Sentry, should be in a new construction PDA, and there should be a different dispenser and teleporter. You should have the option of making it bullets or lasers, but to give a nerf, make it shine a bright light. And the buildings should cost 25% more metal than original. That is only fair because of how OP this could become. The lasers might be powerful enough to deal 50% damage to a scout for ONE laser or bullet. I also think you should be marked for death (take minicrits) when you carry the building. I like the idea by of the dispenser by BENDER that it should give minicrits in a certain radius and crits at level 3. That could work, but I think that to keep it balanced it gives 15% less healing, ammo and metal when being healed. One cool feature that the LED Sentry should have, is it senses when it is being sapped, when it is being sapped, with should mark the spy that sapped it. I also think when it blows up, it does damage to any enemy player in a radius to it. These are some suggestions that the LED Sentry should have.