Slight suggestion for the updated Eldritch Blast invocations, such as Eldritch Grasp:
Shift the text slightly to make it extremely attractive for people who choose Eldritch Disturbance, which doesn't gain much benefit from Pact of the Blade, Agonizing Blast, or even Eldritch Grasp, which can make multiple attempts within a given round without expending any action for Eldritch Blasts that strike multiple times. It will also clear up the text significantly.
Instead of:
When you hit a Large-sized or smaller creature with your Eldritch Blast or when a Large-sized or smaller creature fails its saving throw against it,
Make it:
Whenever you roll damage for your Eldritch Blast on a Large-sized or smaller creature
Result:
Eldritch Ray and Eldritch Whip have the chance to grapple any target each time they hit. Eldritch Scythe has the chance to grapple any -primary- target each time they hit, as secondary targets simply take half damage, rather than having damage rolled for them. But for Eldritch Disturbance the chance to grapple occurs regardless of whether the target makes their save or not, increasing the chances of the effect triggering.
Eldritch Grasp, Eldritch Tentacle, and Repelling Blast would all become significantly more useful for Eldritch Disturbance, which benefits from invocations the least of any of the current Blast Types.