I too often have a thought which goes "gosh, I wish Lightroom did (x, or y, or z)". But then I am brought back down to earth by another thought -
Lightroom costs around £200 here in the UK, and you can get it for less, down to around £170. That's for the full shebang, no holds barred, and free updates until LR 4 comes out.
Whereas, back in the Office, every bit of pro software we use - CAD, GIS, database - costs at least £1,000 a seat. Often more than £1,000 by quite a margin. Sometimes that much every year.
So to my mind that makes LR one hell of a bargain, and I'm not going to quibble overmuch about the odd item on my wish list.
John