Well I'd love to see rudimentary Curves (or Levels) and Unsharp Mask controls.
Being able to Copy, Caption, Rename, Resize, Crop, Edit and FTP extremely quickly from just PM would be excellent.
Having to open some photos in Photoshop, tweak them, resave them; then switch back to PM to FTP them is time consuming (I work for an evening newspaper so my deadlines are often only a few minutes away), and an exercise in physical dexterity when you're performing these actions using a track-pad while balancing the laptop on one knee as my picture editor keeps asking where the hell the pictures are! (I wish that was an exaggeration!)
So please count this as a vote for the inclusion of basic editing controls.
We all have different needs, editing features for me are way more important than DAM [1] features.
Cheers,
Tony
[1] Digital Asset Management....I should've simply said cataloguing features.