This plus their tried-and-true keyboards. I'm not sure if I like where the new keyboards are headed, I never thought I'd see the day where a T-series would have a chiclet keyboard!
Real keyboard + 16:10 hi-res, high quality display and real thinkpad (IBM era) build quality and I would be willing to pay north of $1500
I personally have moved on to widescreen (16:10 1680x1050 being my favorite) due to the ability to split the screen in a editor|browser or editor|pdf configuration (or two-pane editing).
They weren't hard to come by about half a year ago when I bought one. It came without a battery or AC adapter. I paid $256.
Edit - I just checked eBay and searched for "T61p". I found:
* A 4:3 T61p with an incorrect description for $500. That seems high.
* A 4:3 T61p missing its palmrest and other parts, auction only.
* A T61p in a T60 chassis with a QXGA panel, SSD and other upgrades for $1300. That sounds high unless you've tried to find a QXGA panel; they're over $400.
I miss 4:3 on X60s/X61s because it was so much smaller. I like how widescreen makes keyboard bigger though; I just wish for more portable laptop, more like Air but still user-configurable.
I don't mind the new keyboard. The crappy screens are really annoying. The new ones (T430) don't even have the correct ICC profile by default. I measure 2cm of bezel at the top and bottom (each - total 4cm) plus 1.5cm of bezel on the left and right sides (another 3cm of plastic). That would far better be used by actual screen.
(I actually wanted a 15" screen to replace my 15" T61 but the current 15" laptops are so frigging huge with so much wasted space that I had to downgrade.)
Better speakers wouldn't hurt either. I need them occasionally but when I do I am not content with them.
It seems like they aren't willing to make a no compromise product. Maybe there's a too little market for it?
Real keyboard + 16:10 hi-res, high quality display and real thinkpad (IBM era) build quality and I would be willing to pay north of $1500