For those who are still looking for a storage box, I discovered that Go7 Gaming (http://go7gaming.com/) is creating a box insert designed for Sentinels of the Multiverse. After contacting them, they said "the insert is complete and everything is in place. We will be launching next month."
What box is this an insert for? The art case? I wouldn't think the existing Sentinels boxes would really need inserts. Maybe you could have a bits tray in the Vengeance box under the oversized cards.
"Some designs are so space constrained that your sleeving choices will be restricted (hint: Ultra Pro Standard and Mayday Standard will always work with any of our inserts), "
"Bottom Line: If you sleeve using Ultra Pro Deck Protectors/Standard/Pro Fit, Mayday Premium, or KMC you can stop reading now. Your cards will store fine in any of our inserts and storage chests. "
Hope this helps!
NOTE: I do not work for, nor have I ever bought from the site. I only discoevred this through research. I have no clue on the qwuality, but reviews seem to eb positive.
I am disappointed there isn't a way to store the over-sized villain cards, but one of the go7gaming folks said he keeps his on top of one of his box inserts. So there's that.
i am wondering how many someone would need to store all the games and expansions. I use a go7gaming insert for the wooden artist case and vertical storage. I also have bought decks for all the promo cards so I have lots of cards. Villians and the one after should just about fill the entire case.
There's a small possibility that a Sentinel Specific wooden box might be available, as they do offer that for other products, but I haven't heard anything.