Regarding bug #240813 (which has been fixed it seems in the alternate installer), this would most probably be confusing to end users as they won't know what an "LVM snapshot" is. I'd love to have this additional feature when/if full disk encryption capability is added to ubiquity, I am just saying asking the "how much space for snpashots" question opens up new usability problems to be addressed.
Regarding bug #240813 (which has been fixed it seems in the alternate installer), this would most probably be confusing to end users as they won't know what an "LVM snapshot" is. I'd love to have this additional feature when/if full disk encryption capability is added to ubiquity, I am just saying asking the "how much space for snpashots" question opens up new usability problems to be addressed.