So I thought I'd take some time out and post this thread as I believe as a user of Ubuntu for some years the strongest part about Ubuntu is the community!
Post your suggestions & opinions about what you'd like to see in the next LTS release of Ubuntu - Lucid Lynx (10.04)
["Dust" theme as default theme]-I personally think the brown theme is awful and the first thing I do is change the theme to mist and set a different background! I know I'm not alone! I think this would make people more likely to pick up the OS if it has a nicer colour scheme.
[An Ubuntu IM Network]-With Ubuntu One file hosting availiable to us I think the next step would be an Ubuntu messaging network to compete with the likes of MSN and AIM. A client for Ubuntu itself along with a client for windows and mac hosts. File sharing faster than the MSN network. (Capped at 5kb/s) A network where it will be able to be connected to via unofficial clients such as pidgin and empathy.
[Mozilla Thunderbird as default mail client!]-I personally think that Thunderbird is much easier to grasp for the new user.
[Ubuntu Software Centre - Splash]-A splash screen showing the most useful apps like Wine, Flash Player and such with the option to install them for new users who have switched from Windows.