Hey guys, I've been off and on looking at this game to try out with my game group as our first official minis war game, but what will likely make the ultimate decision is if the models are interchangeable or not: i.e. I understand some kits come with components to create, say, one of two different walkers. Is glueing required for these models? Or is it possible to take one kit and switch it between multiple units, depending on what you need it to be? (Going back to my example, could I buy a single walker kit and change the pieces out so it can be either walker?) Thanks for info!