I know it's a long way until 1hand and shield can be reworked but it is a favorite skill line of mine, but for the time being perhaps a second scribed ability can be made for it to pair with the shield toss? Something like this:

Triple Strike

Slash foes with your main hand weapon

An example: by applying Physical Damage, then Cavaliers Charge and Vulnerability you would get an attack that has you strike with your main weapon 3 times damaging all targets in front of you with each strike getting stronger and inflicting minor vulnerability.

If you want something more fiery, you can add Fire Damage and Lingering Torment instead.

One more Example: For the tanks out there you could also apply Taunt, then Druid's Resurgence and Breach. So you can taunt multiple targets instead of just one.

I thought this would be a great addition for the skill line since 1 hand and shield can be used for both dps and tanks when used right. Just want to get your main hand weapon more involved.