I think it would be awesome to have the ability to tie or stick a bomb to an enemy boat, car, or helicopter, and be able to eliminate it with an explosion. This would be a handy feature for divers and stealthy people that could plant the bomb. For example, you could plant a bomb on the bottom of a boat and set the timer. If this is already a feature, than you should make it clearer because I do not know about it.
- Legacy ID
I don't think it's a planner feature atm. Wasn't created in Arma or Arma 2 and neither in OA. I saw a modder creating something for door charges in A2,but I would love if BI made it possible to plant explosives on vehicles.
More so being able to breach doors would be amazing since we now have a much more usable physics engine.
I hope you also come up with some sort of detection for planted bombs. Because otherwise implementation is useless. Lets say if oposing player can simply find out that bomb is attached by pointing mouse on the vehicle. There should be places where bomb can be attached for each car, which is a bit complicated -- each model has to be changed in order to implement this.