I would absolutely LOVE to see the True Life Adventures get the Treasures treatment. At least the first four features, and possibly some of the shorts.
I'd also love a collection of the Jiminy Cricket and Ludwig von Drake educational films, in full, original color. Beyond that, I'd like to see the rest of the Disney educational titles see a DVD release, even if not in a Treasures set. I can't even remember just how many of those Disney educational films I saw at school growing up. Maybe some of these are forthcoming on the "Disney Rarities" DVD.
Releasing the entire "Zorro" TV series just makes too much sense, since TV-on-DVD is a HUGE moneymaker for the studios.