I think there would be too much of a backlash. I think a lot of it is that Minecraft is singlethreaded. Mojang *could* make the performance better, but they don't. I personally think Mojang needs to pull off an iOS 12 where not that many features were added, but most of their time went to making performance improvements. I've never played the Bedrock edition, but I hear it's missing a lot of things.