I'll take a slightly large MBP if it came with a dock connector. My MPB is not much larger then my Thinkpad T61P and that has a dock connector. If Lenovo can do it, why can't Apple?
To those that think a dock is only for business use: You've never used a laptop as your main computer. My MBP is my main computer (Thinkpad is used for emulators on TV and media center when its used at all). Whenever I am home, it is connected to LAN, speakers (USB), TV (external monitor and headphone jack for audio), (sometimes) an USB hub, and the AC adapter. Having to take 5+ minutes to unplug everything is annoying, esp when I have to take my MBP to class almost everyday.