Magmarock: I for one really like using the downloader and wouldn't want to see it go just yet. The Downloader is very good and keeping things organized for offline installation. Will galaxy offer that as well. Offline DRM free easy to organized files for installation and organizing.
Fallen_Zen: Can't promise anything right now, not everything is finalised yet. We'll do our best to make everyone happy.
Magmarock is right, if the Galaxy client won't save the installers themselves for later offline installation, but only install the games directly, Steam-style, then it is
not a viable replacement for the downloader. It would also be a very bad signal to send to your customers after you've kept insisting that the client is optional.