ubuntu-desktop metapackage - options?

[Alec Wright]

Ok. Here's the situation. When you install Ubuntu, you might (like me)
not want Firefox, and prefer Epiphany instead. You might prefer mozilla
thunderbird over evolution, or BMPX over Rhythmbox. If you are one of
these people, you probably get rather annoyed that you have to keep
Firefox, Evolution and/or Rhythmbox, or remove ubuntu-desktop, hence not
receiving any updates to the desktop metapackage.

Here's the idea. The ubuntu-desktop metapacakge should allow different
options for the dependencies such as mozilla-firefox OR epiphany-browser
OR iceweasel, evolution OR mozill-thunderbird, rhythmbox OR bmpx etc
etc.

So what does everyone think? could this be acheived in fesity, or will
we have to wait until feisty+1?