Mesh Deform modifier for Grease pencil

This has utility beyond this but, this would Unlock Greasepencils Potential for 2d hand drawn Vfx. As of now GP only has Lattices which Can't be sculpted on. Which make them harder to work with. So instead i wanted to use a Plane, but i can't because Gp doesn't have the Mesh Deform modifier.

How would you use this? In spine 2d you can use Animated sequences and shaped a mesh to simulate different effects. alot of the same can be done in blender to an extent but not with greasepencil.. Because of those issues

This would Also automatically give GreasePencil a way to have Shapekeys.