The biggest problem with GTA Online when the release a new OP weaponised vehicle, is that eventually, they'll release another even more powerful one to counter the old one, thinking they've solved the issue.  Problem is, all the griefers obviously then move on to the latest griefing tool.  What's needed is a new vehicle that is more aimed at neutralising threats, not destroying them.  My idea would involve introducing the S-97 Raider helicopter into the game with a few added twists: