Here’s the problem, you have no plans to move forwards. Are we to support 3ds Max 2015 for the next 5-10 years? Even when the tools to create plugins for 3ds Max 2015 are no longer available? It’s a dead-end for us. We can’t support every version of 3ds Max from 2015 and on, with all the various versions of V-Ray and Corona included for every release of Datasmith. It’s inevitable that you’ll be disappointed eventually when we are forced to drop 3ds Max 2015 in a couple years because something broke in the development environment. I don’t think we want to create a bunch of angry users that way.