Lots of alphas would be something like just slapping something together (a1) as fast as you can and getting it tested, and then making changes, testing again, changes, again, changes, again and again. Fewer more thought out ones would be: Several tests on an alpha, then make your changes, and then test again. Alternatively: A decently thought out first one (You don't have to worry about the minute details of cover, but just a general "okay I want this main entrances into this area, this many exits this general amount of ammo in this general area", etc.), and then rapid changes after the first one. Which do you guys usually go with?