Actually, that program works pretty much as i do. I make stuff in modules, that i save as objects and import them to add to whatever project i´m doing, as i need them. Mostly turrets, engine blocks and stuff like that. When i need one of those "parts", i don´t need to make them from scratch, i just import.
Judging from the panel screen posted on the other thread, the parts are pretty much simple stuff. It wouldn´t take more than a few minutes for an experienced modeller to make them.
Plus the fact that to get it all working in-game you need to glue those parts together wich opens the model to:
a) excess in redundant unnecessary polys;
b)geometry errors;
and
c) you are restricted to the existing "parts" in file.
If you had a mesh edit tool in the program itself, it could be worth while. But as far as i know, all you can do is resize, rotate, and not much else...
It might be usefull for people who don´t know how to model yet, but my advice would be to learn using a real modelling program instead.
The problem is that when people want to learn how to model, they try 3D Studio Max first. And then, when they find that the program is excessivelly hard to master, they give up. I sure did! Had it sitting on my HDD for years, without being able to build a simple shape. Then i tried TS, and stuff began to happen...