How about if they give crusader strike it's old effect back to refresh debuffs/stacks on the target.
-> seal of corruption -> get 5 stacks up (for 33% extra damage)
-> switch to seal of command (assuming the damage % stacks)
CS keeps refreshing the 5 stacks and thus the extra 33%
The only downside to this is on fights with a lot of movement. The switching can be tedious.
Also, having SoC up will remove the "crits deal 200% damage" that's linked to seal of corruption.
Anybody got another suggestion?