The very polar "use the whole disk" and "partition it yourself" could be improved. What about a "accept default recommendations" and have the footnote on the manual partitioning screen be the defaults?

Having a separate /home partition is practically a must. Having a beautiful default setting that would create the basics with the minimum necessary settings would make installing this for newbies a little friendlier and help set them up with a system that can survive an OS re-install. The minimum basics would be, as stated in the "footnote"":
2000Mb - /
100Mb - /boot
256Mb - swap
Remainder - /home

Arguably, on most systems, those settings could/should be:
5000Mb - /
100Mb - /boot
512Mb - swap
Remainder - /home

I'm sure the exact numbers could be a source of great debate, but the goal here is to set newbies up for success by giving them something more thought out than "use it all!" and less complicated than "do it yourself, you lazy n00b".