In the event (and the hope!) that powers or effects that bear some resemblance to Propel exist in this new build, I would encourage that all clients see the same spawned object.
In CoH, object generation for such powers was considered a particle, and as such was always rendered client-side, and the engine had no existing path to share any sort of seed or anything else to specify a certain type of particle.
Thus, while my hero might be throwing a dumpster or a forklift at an enemy target to considerable amusement, the other players in my group might see a lamp post or a sink.
Despite much pestering, I was unable to successfully petition to get that fixed in CoH, and I do hope it could be accommodated here - it really lends to the atmosphere. :)

Thanks!