I second this as a nice balance of no stock photos vs having stock photos. Now that DeviantArt stacks the alerts, you can delete them for that day without worrying about missing a tutorial... or did I totally miss germy-raven's point?
The problem with stock is you really need a lot of it to be of any use, and if you aren't looking for stock, it tends to clutter your inbox. I watch for the tutorials, and while having a the stock resources available is nice, I'm not sure it is worth the cluttered inbox.
If I don't misunderstand something badly, opening voting for all members will make the inbox cluttering way worse, because ALL stock submitted will end up in all members' inboxes first for them to decide if the quality is good enough. The images which get accepted will then show up in the devwatch afterwards, too.