Settlement building is simultaneously awesome and frustrating. Even with tricks like using foundations, placement of certain items can be a massive pain in the ass. There are a lot of areas that don't even seem tailor made to building which kind of baffles me. The fact that I have to clip metal walls through other structures to "repair" things is stupid and you'd think Bethesda would have just designed existing houses and areas to be easy to build upon. I know it's nit-picking, but when I'm trying to put a trash gate up between two pillars and it just baaaarely won't fit, it makes me wonder why Bethesda wouldn't have the foresight to say "Hey, let's space these pillars out so they exactly match the widths of the walls you can build" or "hey, let's have metal walls snap to houses so you can fix the gaping holes in the side and not have them look like an idiot just put it next to the house six inches away".