From what I know In having built and experimented with many drones...
DJI props are very well engineered for optimal performance in regards to mainly the drones photography and video capabilities. Changing to a different material propeller like carbon fiber which cosmetically look better and are stronger, usually lead to camera performance issues witn very little benefit in either flight performance and or flight time. Usually it always plays out where you end up either sacrificing some of your video and photo quality for flight performance. Its very rare on any drone that you can have the best of both worlds without you putting a great amount of effort, time, and experimenting with different gimball dampening materials to have both camera and flight performance.
Also using propellers with either higher pitch or surface area on DJI drones can cause motor load issues, or make the flight controller think its flying in higher wind conditions than you actually are. Unless your doing aftermarket propellers for cosmetic appeal, FPV, or racing with the understanding that you may be giving up camera performance to do these things is there a benefit.
Now if someone built some engineered quieter propellers for the Spark that are like the new ones on the Mavic Platnium, it might be a worth while upgrade on a Spark since its only a change in the timing of when the blades leading edge vs the tips edge cuts through the air that makes these new blades much quieter.