That would create end bind for the saw, and the piece wouldn't fall into the splitter part perfectly. There is a reason everyone that builds these wastes the time and money to build a conveyor. That takes a hydraulic motor, hoses roller assemblies etc, but it's worth it because it works the best. I have seen redneck ones where the dude pushes it by hand, and powered redneck ones where the guy puts a winch line choked around the end and pulls it, but everybody who has a good one is done with conveyor rollers. Its just kind of "the way". I've found when designing stuff to build, find out how everyone else does it, and then see if there is a better way. Sometimes there is, but it's rare. Humans can be smart, we just need to take the next step in their thinking. Stand on their shoulders so to speak. But hell you know all of that, you've actually brought stuff to market. I did see a cool one that was a skid steer attachment. He would grab a log, drive over to the pile, and then everything was contained on the bucket. Had a stroke movement to feed the log, hotsaw, then splitter, then pieces fell into the pile.