This is something I've been wondering/thinking for a while. Their current laptop designs are pretty close to the platonic ideal of a laptop. How, actually, would you change the design from here that isn't just sticking on baroque ornamentation? But maybe, not being a product designer, that's just a lack of imagination. 😀 They tried making it thinner of course, but it broke the keyboard. They might have to have a thicker lid to get in a better webcam, but if the lid's that thick you might as well make it a detachable iPad and put the actual computer in there, and they've *consistently* said they're not going in that direction (or, worse, a knobbly camera bump on the back of the lid? I'd like to say that'll never happen but I haven't honestly gotten over them putting a camera bump on the back of their phones)I'm still wondering if the Apple Silicon devices will come with discreet graphics down the road. An iGPU cannot compete with discrete graphics for super heavy rendering. Then again, maybe the M1 may not need discrete graphics. Also, how much more can they redesign? Thinner bezels, FaceID, and then what? It'll still be the same aluminum slab. They aren't going to turn it into a triangle or circle laptop.
I suppose they'll go to discrete graphics now when it's powerful enough to outweigh the efficiency benefits you get from having it on the same package as the CPU cores and main memory. which is to say, the threshold at which point it's worth going discrete will have just changed.