I've been using IBM (and now Lenovo) Thinkpads for quite some time, and despite being a fan of their X series (currently using an X220) I REALLY wish Lenovo would consolidate lineups and focus on higher quality offerings. Even small stuff like offering a TN panel on an X series instead of an IPS panel seems foolish. Having just upgraded my display from TN to IPS, it's such a stark difference that I think Lenovo should default to selling these kinds of higher-end product lines with IPS.
When IBM solid Thinkpad, it was a premium brand. It still maintains that connotation among IT professionals today (who know the lineups and history), but there are so many models out there that are absolute crap (or at least, look like garbage) that it's diluting the reputation.
This is pure speculation, but I haven't heard "that Thinkpad looks awesome" or "that machine looks well built" in quite some time (X1 carbon aside).