Magma Cube Revamp

Every Mob in the nether seems to have something specific about them, but the Magma Cube is kind of the odd one out. I think that they should be given more of a purpose than just brewing. This is what I propose. They should maybe be able to leap great distances on top of the lava, and maybe even tamable/ride-able. They would be able to leap 5 blocks tall and 7 blocks across, and would be tamed via blaze powder. If the Nether was to be revamped and more structures were added, they would be a great option to get to places that are too close cut too get to by elytra. This would give them a bigger reason then just brewing, and I feel that they are just too well designed to go this unused. Tell me any other ideas you have in the comments!