Looking for suggestions on setting up my ReadyNAS314, and choosing the right RAID setup

I think people are really over thinking this.  Thinking of things most people arn't going to try.   They're going to pop their drives in, when needing more space pop in larger HDD's.   How many people really are going to go backwards?  I have a bunch of smaller HDD's laying around here from over the years.  never have I thought, hey, let me throw that small drive into the NAS.  How many are using RAID 50 or 60?    As long as a person knows equal or greater size HDD as a replacment, then for the most part the Calculator works just fine.   If it's a new setup, it should also be fine.  Again for most users.   You're always going to find loopholes.  The program is at least smart enough to switch from XRaid 5 to XRaid 6 when you get to a 7th HDD.   I think in general most people are using XRaid 1, 5 or a even larger NAS, 6.   

If you're using Flex-Raid, or some off beat Raid format on your NAS, I'm pretty sure at that point you know what you're doing.  You're not some clueless person.  I'm sure there's a few exceptions to the rule.    For the most part and most people, the Raid Calculator works more then well enough.  Maybe a few things could be made more clear on the page.