I would like people to share their present "Ideal" bivy or tarp or tent shelter ideas.
I'll start:
I think a one sleeved-pole curved in back about 1/3 up the tent wall "pop-up" tarp tent with one vertical hiking stick "Deschutes" tarp staked to the ground or, optionally, 4-6" off the ground, having a double-zipper on the "door" and hiking stick propped out the flap for a vestibule would be my present "ideal" shelter.
Even better than a sleeved pole in the back, have a pocket at each seam at the back and have a webbing loop with a snap to hold that collapsible pole at the top of the curve, the back cut in a curve for that collapsible pole.
I first saw that "option" on a hammock tarp, to increase the useable space inside.
http://www.2qzqhammockhanger.com/polepockets1.html
This "Ideal" shelter would also be staked to plastic D's, not hanging webbing straps. I have plastic D's on a Hammock Gear cuben tarp I really like a lot, and has never failed.
The design would have to allow sufficient space for a vestibule.
No hard vent, only have a double-zipper "door" so I can prop open the zipper opening at or near the top, where there is a loose flap with a "pencil pocket" for propping open and have the stenciled brand name on the flap.
The sleeved pole or pole and pockets would be removeable, of course, and a collapsible pole.
Available in white or black cuben, maybe tan or olive drab as well, it would be that shiny "reflective" cuben on the inside, at least on the back wall so, completely open up, it could reflect heat of a small fire.
There would be a 7D or 10D fabric option.
Have a multicam cuben option, to please everyone.
It could also have a permeable reflective back "dew cloth" option.
I would have a high cuben or 7D or 10D option bathtub base, for wind shedding, as well, for my bug bivy that has one elastic cord run to the apex of this shelter. It could also have an optional half-shelter high wind shedding bathtub floor bug "inner net".
If the ground is unsuitable, I would use a separate polycryo ground sheet.
With every option, this would be my do-it-all "Ideal" tipi or tarp or tent shelter.