I've always wondered why no one is building a Hybrid Desktop/Laptop specifically for gaming, and on site science and graphics applications. Think of a small footprint desktop, with many laptop components, set flat on its side, with desktop CPU, User Upgradable Desktop Graphics, a flip up hinged screen like a laptop, keyboard and touch-pad under the screen like a laptop, and no battery. Keep it plugged in all the time.
That would be the ultimate portable gaming / graphics rig. Especially if it came with a user replaceable mother-board.
I look forward to your letters.