There is potential to add a steampunk vibe to vanilla Minecraft that most players seem to have overlooked in their time with the game, Mojang included. You can make interesting redstone designs that don't use lines of redstone, you can make awesome trains that move like five carts without needing redstone(You can't have a caboose in Bedrock Edition!),you can have systems that play in to the fact that minecart furnaces need coal to run, such as some kind of alternating generator, the list goes on. I won't deny that there isn't really any objective purpose to having them, they don't add any function to the game that can't be replaced with redstone, but there's aesthetic appeal to their existence and nature of operation. I know I'm not alone in thinking this, there are plenty of people on Reddit and Minecraft forums asking why they aren't in Bedrock, and as far as I could tell no one's been given a real answer. Rumors of them being too buggy for the dev team to bother implementing(I never experienced any bugs) abound, but so what? There are children that have never experienced minecarts with furnaces, and they never will if we can't help them. People need to be given the choice to use a buggy minecart furnace thing if they want to. Thank you.