A laptop improvement I'd love would be a haptic keyboard. You could then make the entire laptop waterproof as well as do keyboard reconfiguration for certain tasks.
I always though Apple's Touch Bar was some kind of entry point into that idea but it wasn't, wasn't useful, and just died.
Wouldn't it be pretty miserable to actually type on? Not that laptop keyboards are usually very good.
I tried a prototype continuous feedback haptic keyboard once. You could feel the “keys”. Took getting used to but it wasn’t bad. It basically tricks your senses into thinking there is something three dimensional there.
I wonder if power consumption is a problem. That requires constant energy use. There’s also been problems with them emitting a faint sound, since you’re creating vibrations.