MTG Salvation

I recently built a common/uncommon(Peasant?) cube. Currently I run the refuges, tri lands, vivids, bounce lands, gemstone mine, city of brass, rupture spire, and the two fetches as mana fixers. This is annoying because all but two of those come into play tapped. For the control decks this is not that big of a deal, but it really messes up aggro. Are there any options that I've missed(i've looked through every land on gatherer) that anyone's found that is any good? Im thinking of resorting to Chk uncommon lands, this may be desperate.

edit: I will likely try out ancient ziggurat soon

You're pretty much out of luck I'm afraid. You can run a decent 2 colour aggro deck without any dual lands, and even cards like the vivids/bouncelands aren't too backbreaking to run in aggro, especially in a peasant cube. Learn to make peace with it.

Are you running Mirage fetchlands? What about the Planeshift lairs?
Ancient Tomb is a good uncommon.
The Odyssey threshold lands were pretty decent, and the red and blue ones were downright amazing. pity that white was that bad tho...
Technically Bazaar of Baghdad and Library of Alexandria and Karakas and Island of Wak-Wak were uncommons... but that probably isn't the type of uncommon you want
Cabal Coffers and Krosan Verge and all the Tainteds were uncommon
maybe rhystic cave? ie. the only mana-producing land whose mana ability isn't considered a mana ability
then there's temple of the false god

Oh yeah you should run Mirrodin's Core maybe. I've got that in my peasant cube that I'm making.

Mirrodin's Core is great (although it doesn't give colors on turn 1) and Ancient Ziggurat is fine as long as you remember that you have to build around it. Aggro also needs to be comfortable first picking City of Brass or Gemstone Mine. I'd bet that Rupture Spire is good too.
Mishra's Factory, Strip Mine, and Wasteland don't fix your mana but they're also aggro staples.

Shimmering Grotto is not ideal by any means, but is a common. Also, the Lairs sort of duplicate the Shard Lands.

I might run the tainted lands in the black combinations over the Kamigawa / Tempest laglands.

There's always the Coldsnap and Invasion allied lands....

I'll repeat the Krosan Verge suggestion. That should be pretty nice for midrange decks.

Panoramas are pretty strong as they can tap for mana when you need and color fix when you have the extra mana. Not really that strong for aggro but reasonable and really strong for midrange/control.