There have been times when I can't pitch the Trailstar exactly where I would like to or in the exact desired alignment due to its size and nearby obstacles, but I've never ended up in an area where I couldn't find some place to pitch it at all because of its size.
In a few circumstances, I've pitched it partially over fallen logs, small boulders, small plants, etc. It really is a versatile shelter in this regard.
The more likely scenario (in my mind) is having to pitch the shelter higher than desired to accomodate one of the above obstacles on a day when the weather dictates a low and tight pitch.
I will say, it's a big a shelter! This last weekend, in a pinch, we fit three adults in the Trailstar to get out of some nasty winds. My buddy's cat-cut tarp was not up to the conditions at hand (40 mph+ swirly winds throughout the night while pitched on beach sand). We had to pitch the Trailstar with the center pole angled and get a little creative with the layout of sleeping bags but it worked fine and kept us all out of that awful wind.