I prefer the idea of shield swipe being an oGCD that uses mp and is on a 15-25 second recast rather tham a spammable GCD that would use Tp like a warrior.
Instead, i like the idea mentioned of an effect somewhere in circle of scorn that spreads goring blades DoT to all enemies it hits.
You would use flash to round them up shield swipe for a nice aoe with damage and emity, fast blade, riot blade (add more mp regen since we will be using more), FoF, GB, CoS. The ideaidea being we no longer need to spam flash or rotate RoH combo to hold good aoe emnity.