ia scatter is an effective blueprint actor and static mesh instance scattering tool.
Features:
Area, spline, planar, linear and point tracing options. 1D and omnidirectional
static mesh voxelization distribution and texture map instance projection
static mesh and actor(blueprint) instancing (with probability setting)
convex / concave detection mode
clustering
scale falloff gradient with ratio control
look-at rotation options and target (3d widget)
use spline from separate actor
apply spline rotation to instances
fixed instance...