Okay, Here's my list.

-Improved browser, as mentioned before, preferably with scroll bars.
-built-in modeller.
-built-in texturing/texture painting, like deep3d-paint or similar

• GI -lighting, real SSS, 64 bit renderfarm, texture baking.
  -improved 3D-interface, Mec4 is absolutely right, especially use of the right and middle wheel mousebutton, but I don't know if that works for MAC-user (the last MAC-mouse I used had one button) => wheel button: zoom in-out and panning, rightbutton orbiting.
  -weight and normal maps, I don't know exactly what they are, but other porgrams have it and it sounds exciting.
• direct cloth manipulating, I know you can do that with magnets but I just want to click a piece of cloth  and pull it.
  -real time and active collision detecting,
  -real time dynamic clothes, I know that is possible,why do we have to wait for every clothroom simulation.
  -improved animation editing.
  -soft bodies simulation.
  And all this for the price of a regular poser-upgrade ( in dollars please) ,I don't think that will be very realistic, but we all have our dreams.

regards,
Bopperthijs

-How can you improve things when you don't make mistakes?