So I just spent AGES stealing a Titan from Fort Zancudo. After storing it in my hangar at Los Santos a international Airport I flew off in another plane and heard an explosion. After landing and returning to the hangar I found a destroyed Titan. WTF?
Definitely allow players to customise driving and flying. There should be three settings: Arcade, Normal and Realistic. Add lots more funny cheats. The ability to pilot UFOs would be fun. Vigilante missions as well.