I think Xtreme Pro can attract new people, but I think the look of the interface must be changed. It is just to classic xara, and although there are many new features, it does not feel like a new edition.

for example, The xara pro splash screen gives me a feel of 'new' (although it can be just a tiny bit more pro), but the total interface is rather retro. Look for example to maxon cinema 4d, the latest release (10) has now a dark color scheme, with modern icons, it gives a more new and up to date look.