Nothing wrong with a good circus picture (even though circuses without "Soleil" in the title are pretty much gone).
But why remake a 62-minute feature from 1941? Because Diz Co. can. And because pretty much every remake of old animated features that Disney has produced over the last decade has made lots and lots of money. So what could go wrong?
Of course, there's the small problem of "expanding" a movie that was hard-pressed to come in at more than an hour in the first place. So let's go with new characters and push the family angle. Maybe all the new baubles and bright shiny beads are brilliant additions to the 78-year-old tale and Disney will be able to open its own mint.
Regardless, the strip mining of Disney feature animation titles will continue. No doubt around the time I reach eighty, "The Black Cauldron" will get a live-action reboot.