The fade in/out could also be controlled by a blueprint controlling a material instance.
that would probably be the cheapest way to go.
you could use particles but thats basically just a middle-man/surrogate for the blueprints.
optimization/drawcall wise not much would change.
Blueprints to follow along a path/spline should be fine
Iโm trying to think of a way to make 10 or 20 meshes follow a path, and give them a random lifetime (like the particle lifetime). Would anyone have an idea on how to approach this? I read mesh particles wonโt work with paths, but they would give me exactly what i need fading-out wise.