funnily enough I prefer the DVDA "super jewel plus" cases (as they were called, I guess to differentiate them from the smaller but still rounded SACD "super jewel" cases) as there's something a bit more collectible/unique about them, though I do agree a CD + DVD-A combo is the perfect package that satisfies all needs and should be/should have become the standard for surround releases, imho.
have you tried storing your DVDA "super jewel plus" cases on their side (i.e. on their clasp/opening edge, as opposed to upright)?
they still have useful title info on the spine, though they do stand a little bit higher than a regular CD/SACD.. even so, they will then fit into most regular CD storage units that way (like the Ikea "Benno" tower CD/DVD units; link below.. I have one - now stuffed full - for my DVDAs & DTS CDs that come in "Super Jewel Plus" cases.. with the central/fixed shelf holding the smaller Warner CD/DVDA digipacks, like Jackson Browne "Running On Empty", David Crosby "If I Could Only Remember My Name", Graham Nash "Songs For Beginners", etc.. each tower holds 180.. eek!).
http://www.ikea.com/gb/en/catalog/products/07305310/
I get more pissed off at the big boxes and less regular packages, like the Immersion boxes, the Mostly Autumn DTS (which is in a "King-Sized" DVD-Video jewel case.. Grrr!) and the recent Thick As A Brick book package, as they have no natural place alongside any of my other surround stuff!!
just as an aside, for anyone looking for DVDA replacement cases, here's some info..
http://www.sleevecityusa.com/super-jewel-box-plus-p/sjb-plus.htm
They're not the older "narrow hinge" variety but they're perfect replacements for about 10-15% of DVDAs that originally came in wider hinged jobbies.. and they still work for the remainder of your DVDA's, just with gaps at the rear inlay/hinge part.