Kinda new, I wanted to build structures using the stock parts in KSP to just see how big I can make them. I don't mean attatching tanks to tanks either, I mean more along the lines of making huge satellites from the 1x1 and 2x2 panels, and other parts. I've made a moon base core hollowed on the inside so kerbals can walk in and through it. I've made a huge space station ring hollowed out so it can be moved through. One thing I'd love to see is hinges and pistons. Make huge doors that open to reveal whatever, make entire "foldable" bases if so desired. Okay maybe not that far, but I'm thinking more along the lines of making a dome (which I have done) and have a large part of it open upand reveal the interior. Maybe even have another item raise up out of it and something else like a large satellite dish open up from it.