The thing about the 3D application is ... why the heck do they have any 3D development to do at all? Aren't there enough 3D engines out there that they could take one off the shelf, and plugin in their tile and figure models, and attach the character visualizer to that?
WOTC is not a software company. It would be no great surprise if they're unaware of how to do a feasibility study, requirements gathering, system analysis, design, and/or management. In fact, they've basically demonstrated that over and over. There may not be anyone in management who knows that buying an off-the-shelf software package is an option (or incented to do so).