There is Battlemech 3D which tried to put CBT into a 3D environment with animations and an easy-to-learn interface. It was fun, although it's buggy, prone to crashing and looks kinda cheesy most of the time

It's far from complete aswell.
Development stopped some years ago, but the source code is floating around my harddrive somewhere, aswell as the latest version.
Some screenshots can be found
here (German, sorry) but the official site is dead. If anyone's interested I can upload it.