I'm curious how many people would prefer a more durable/thinkpad-like framework laptop. I get they're trying to go for the more popular/mainstream light/thin/pretty design but man I still like using my T530 over my FW13. I've seen posts like "set my bag down a little too fast and bent/had to replace my hinge" and whatever. i still think the Framework is the best laptop currently being made and would still recommend it and do recommend it to my friends. Obviously some people like the weight and see it as worth the trade-off. but dang i wish there were a beefier one, I dont think we're going to see "framework on the international space station" posts at this rate.
https://www.printables.com/contest/449-framework-computer-mainboard-case
A while back they partnered with Prusa on a 3d printing contest. There are some neat cases in there, including a steam deck style one, but no direct laptop replacement.
It wouldn't be THAT hard, it just seems like nobody thought it would be useful, you wouldn't get any additional functionality out of a bigger case, you're still locked into the same connectors, battery, and modules.