I’ve been working with the new foliage propagation volumes, and wow, what a time saver. One snag though is that the propagated instances seem to want to reinterpret collision; settings need to be redeclared in the foliage type, and there are no settings for walkable slope override, which causes some pretty severe problems for us. Can I assume that since the feature is experimental that a solution is in the works?
Also, the ability to propagate blueprints, as opposed to just static meshes, would be fantastic. 
Thanks!