The one thing i really did miss during the installation of Mageia 2 were a Summary screen before the installation started. I would love to be presented with a screen telling me how the installer will partition and which packages will be installed - asking for my approval before the actual install starts. Being a fulltime Linux-user since 1998 - and having tried most versions of the big distros over the years - i was pretty sure what would be installed but It would've served as a nice assurance before actually performing the install.
Just a brief suggestion which I hope will be considered.