Connectable Minecarts!!

This would be a GREAT addition to the game - I'm not talking like the usefulness of pixel perfection, but the ability to create minecarts, connectable by chains, in vanilla minecraft bedrock AND java. Think of the possibilities- FREE railways that you don't have to spend money on from the marketplace, endless tracks connecting you and your mates houses. Think of the ease. Think of the usefulness. And make your decision- would this be a good addition?