On the grizzly, I placed most of the blocks, but my brother was with me most of the time helping me decide which pieces to use and what colors to choose. The reason we chose the Grizzly was because it is his preferred mech in MW4. I am hoping this project inspired him to keep working in LDD with similar attention to detail. Regarding the feasibility of the model: we tried to build the structure as sound as possible, but attaching the missile rack and left shoulder arch was difficult, and may not stay together well.
By the way, LDD is no longer being updated: http://thebrickblogger.com/2016/01/lego-digital-designer-the-end-is-near/
This is one tough navy, boy. They don’t give you time off, even for being dead. -Clay
Storm Petrel