The LiveCD installer is already the simple one. So the alternate one could be the really customizable one.

* Do you want to install to one or several partitions, an lvm-system, a file (like wubi), an usb-stick ...?
* Whatever your choice was, do you want to encrypt the root filesystem?
* Do you want a swap partition, a swap file or no swap?
* Do you want to encrypt swap?
* Do you want grub on mbr, grub on the root partition, a chainload through ntloader, add entries to already existing grub, lilo, no bootloader...?
* Do you want to configure by hand, which applications handle your network functionality?
* Do you want to use the standard kernel or download one that is compiled for some specific kind of cpu (of course these must be uploaded first)
* Do you want your monitor to be autodetected at every boot, or do you want to enter its properties now, or do you want it autodetected only now?
* Are there commands you want to run at every startup?
* Do you want to customize the look, resolution etc. of the splash and login screen?
...

With several of the questions on one page and all of them having a useful default answer it should be very quick to get through.