I really like unity and dislike GnomeShell for different reasons.
But Gnome plans some really cool stuff such as the recent mockups
for various apps.
http://afaikblog.wordpress.com/2011/11/10/gnome-design-update/
and
http://www.webupd8.org/2011/11/new-updated-gnome-application-designs.html
The question is shouldn't Ubuntu move as fast as possible to the
latest gnome version so that they can implement most of these thinks
in 12.04.
1) Music player:
- banshee needs mono, is slow and still is a gtk2 app
- rhythmbox looks ugly
--> help Gnome implement the music mock up and you
have it
2) Chat: the current look of empathy isn't really good
3) Videos: currently we have a video player and banshee: banshee has
a library, video player not but banshee will be removed
4) network senntigs look a lot better in gs than in unity (here you
have just to change the option in the connection indicator)
5) notifications: i really like the integration of empathy in GS you
don't need to open a window just type something...
and: Online accounts is nearly useless in unity and their is no
calendar (although I prefer Thunderbird we need a calendar)
But a think most important is: the farer we got from gnome the
bigger the differences and the harder for gnome, canoncial and app
developers to handle different shells