Is there a way (using blueprints) to make a procedurally generated pedestrians, with the pedestrians having parts like clothing and various augments, and some various animations?
Of course you can.
check this video : Procedural Building in Unreal Engine 4.0 - YouTube
it is a sample of making procedural building but the basics are the same.
basically you have to break your pedestrian to as many components you can and provide all of them in a blueprints. then create and expose variables for controlling each of them, now you can weather choose a combination by random or manually.
E.g. ( have at least two different skeletal meshes for men and women, a few different walking animation. some few clothing textures that are mapping the your skeletal meshes UV channels. you need some color combination. some variable for walking speed. and an AI that can randomize two three types of behavior ) . now every time an object gets spawn in the construction blueprint you can randomly select a value for each of the above mentioned variables