An idea - not sure if it could at all be implemented or not, but hey...
Build threads go in a specific subforum. In there, the thread creators can flag posts they make within their thread as "primary" or "build related" or whatever you want to call it.
At the top of said thread, there is a toggle that anyone viewing can hit. It will show either "All posts" or "Build only posts."
"All Posts" view looks like a normal thread, Although the "Build" tagged posts may have a bold header or something to make them stand out a bit.
"Build Only Posts" view minimizes all other posts, though there is a button or link between the various "Build only" posts to show/hide other posts that occurred in between those main build posts.
This way, you can still have the chit-chat going on, the feedback, sharing of ideas, etc (all very important). But if someone simply wants to see the main stuff, they easily can, but still with the option to view the chatter in between each one if desired, without having to show literally everything.
Just an idea. Good/bad, possible/impossible, no idea.