Just thought I would post my view on the 2 top priority features (writable user shares & security):
The top priority unRAID development appears to be writable user shares. At first I thought this was a great 'must have' idea, but in practice I prefer to write data to a specific drive (via a hidden writeable share), and make my 'User Shares' read-only for other home users to access.
The thought of writing a backed up DVD folder (for example) via the proposed writable user shares, and having different files within the folder ending up on different drives, does not appeal to me. I would prefer to dictate which drive I am putting each related collection of files onto (so they are all in one place). As I fill up each drive before moving onto the next, this approach is not actually an an inconvenience in practice.
It probably comes down to what you are using unRAID for, but in my view there does not appear to be any real need for Writable User Shares for the primary intended unRAID purpose of a media archive storage server (ie. write once - read many).
My vote would probably therefore go to adding
Security as the top priority. ie. So that we could password protect selected folder shares etc. and also hopefully be able to individually select which folders were published or hidden.
Not only do I want to be able to secure all of my writable shares with a password, but I also would like to have a password on selected read-only folder shares (or selected 'user shares'), along with the option of whether these individual password protected shares are hidden or published.
I can see this as being necessary for example, where you might have younger children that you want to restrict from age restricted media shares, or if you have backup data that you do not want to share with everyone.
My 2c.