I'd just like to point out that if I launched a javelin at you, if I used gravitational arc, it would punch right through your chain mail. Maybe even through plate. I'm not sure. But defently chain mail!
If it is possible, can we make throwing weapons need a high arc to do damage, like they would in real life? So if I throw it straight, it's more accurate but does less damage. If I aim up, there's less chance of me hitting some guy but more damage due to gravity!