What shelter am I looking for?

The Yama and Hyperlite Mountain Gear are the closest thing to what you want.
They both have a dual pole set-up.

If one pole set up is a priority, look into mids. MLD, HMG are the only ones that come in cuben I'm aware of. I'm sure there are more though.

One pole, four stakes (minimum) and your good to go. My preferred shelter now. I have a Duomid in cuben and in the stuff sack with all the lines it weighs 15.7 oz.

Otherwise Yama is taking a break from making shelters last I checked.

:)

Different shape with a side entrance, but maybe the new SMD Deschutes tarp?

Before you commit , add carefully the weight of all of the components (fly,inner,stakes and guylines) then compare with something like a Contrail or Notch.
For the Notch you can get a solid (non bendy ) extra pole for 4 oz.
You then can compare things like rain/wind protection. air flow, headroom laying down as well as sitting up , also set up ease and speed.
Both Notch and Contrail can be set up in under 2 minutes .
franco@tarptent

I agree with the comments on the Yama Mountain Gear… particularly the Cirriform SW tent. I long wanted a Contrail, but the weight was a bit more than what I wanted, and I too wanted a cuben canopy rather than sil. Then Gen came out with the Cirriform SW’s and I got one as soon as they were made available. Then, at a later date, a buddy came by with a Contrail, so I set them both up and did a write up/comparison type video of them. You can check it out here:

TT Contrail & the YMG Cirriform SW

Don’t get me wrong, the Contrail is still a nice tent, reasonably priced, but for someone that wants a little more space, less weight, and a cuben canopy, with a sil floor, then the Cirriform is definitely a step in the right direction… although, it will cost you (as is expected). It does require 2 poles, but wow, the difference that the second pole makes is wonderful. If you use trekking poles though, a 3 piece pole will work better than the 2 piece poles in the back… the 2 piece poles won’t collapse short enough.

Hope this helps some.

Yep, I knew it'd come down to these two unless I want to do the whole myog thing. It may come down to material (sil vs. cuben) and whether this shelter would need to stand up to cold/snow. Then fiddle-factor (1 vs. 2 poles), …. Honestly the MLD bivy would solve these problems, just not digging the lack of space with anytime spent in camp.