Is there any indication that rav1e is so inefficient as to have substantive double digit percentage speedup left to be realized? Because even if you cut encode

Is there any indication that rav1e is so inefficient as to have substantive double digit percentage speedup left to be realized? Because even if you cut encode times in half, they already take hours per minute of video on a quad core. AV1 is unlikely to ever be practical for "muggle" encode use, at least in this decade. It will only be worth committing that much compute workload to making a smaller file if the recipients will number in at least what, millions? I'd be really curious what a hardware realtime AV1 encoder would even look like. How much silicon would that take? That kind of chip would have be be colossal even if it sacrifices huge amounts of efficiency to spit out frames at reasonable time (in the same way hardware hevc and vp9 encoders kind of suck).