From time to time I recently thought that the day I need to think about a new laptop might not be that far away. It's probably still a year or so I'll use my current one, but I already have my eye a bit on current models and spent some thoughts on it. As always, I think it'll not be a »take the model fitting all my needs, it'll be a »take the lesser evil«.
Some things I'd love to have in my new laptop, if you're working for a laptop-company, maybe you could tell your hardware designers about this post ;-)

1. Make it lightweight.
I carry it around very often. < 2 kg would be fine, 1 kg would be great.

2. No internal CD/DVD.
Recently someone said to me: »Why don't they build laptops without optical drives?« I thought a bit about it and think he was totally right. The CD/DVD-drive is probably one of the most heavy parts of a laptop that could be removed. I (and I think many others) use it very rarely and would have no problem to use an external one when I'm at home. Just deliver a »get external USB-drive cheap«-coupon with it.

3. Ergonomics and usability of keyboard and touchpad.
Okay, I've seen things like putting the </>-Key on the right side much too often. Hey, have you ever thought that people search their keys where they're used to be? I know you can't place a common keyboard on a laptop, but who the hell says that you can place keys whereever you want? I'd like to have the basic part (that is all letters, numbers and char-keys around them) not crippled.
Mouse/touchpad: Just if someone dares to suggest me buying something from that company with the fruit-logo. As I said above, I'm carrying my laptop around very often (that's why I have a laptop). And I want to use it when driving in a train, sitting at some hackers-event I hitchhiked to or things like that. That means I want to use it at places I don't have an external mouse with me. Thus the touchpad should be usable. I'm usually used to have a middle-mouse-button. Now, why have they vanished from most of todays laptops? There were mouse-wheels on laptops some years ago, but today they're very rare (my current one, Samsung P30 has none, although the earlier model, X10, had one).

4. Linux and drivers.
Make a fully Linux-compatible laptop. Hell, is that so hard? I asked around at the linuxtag once, where many laptop-vendors had booths. None could advertise me a model which they claimed »fully linux-supported«.
And with »fully linux-supported« I mean all features and free drivers. No »yeah, the graphics are supported, but 3D is a bit slow and no TV-Out«, no internal »WinModem« that has a free-of-charge-driver supporting 14.4k and a xx €-driver for full-speed, no »we once had a driver for 2.4-kernels, but stopped developing it«. I want to be able to use every device built into that thing I've payed for.

5. Sell it cheaper without windows.
I don't want to pay for things I don't use.

5. Many USB-Ports.
Hey, everything today is USB. USB-sticks, USB-bluetooth-adapter, USB-mouse, USB-keyboard, USB-tabled, USB-camera, USB-joypad, USB-HD. My current model has only 2. I'd need at least 6, better 8.

6. Put some quality speakers in it.
I've heard laptops that were completely unusable for watching movies because their speakers were so bad (my current ones are quite okay).

7. I hope I can still buy something without TPM then.

Could probably think of much more.