Preferably there would be something like the ITX standard for laptops with different standard designs. Like a ultra book, notebook and different screen sizes. If there was standardized screen you could easily repair your laptop.
All hardware should be open. The firmware should be open with known checksums. Open boot loader. Open source operating system.
All components should be upgradable so that once the laptop speed wise is obsolete by moores law it should be easy to dissamble and recyle the materials. Further you should be able to reuse components which does not age that fast as the cpu and mainboard, for example the keyboard, mouse and display.
We throw a lot of electronic garbage, that ends up being exported to cheap scrap yards in China and Africa, this needs to change if we do not want a junk yard planet.