You don't have to go to "all those guy points" with every trekking pole design.
At least three of the cottage companies now make variations of the original Wanderlust Nomad design, improved by the use of a spreader bar at the top that attaches to 2 trekking poles. Two or four stakes then pull out the corners, depending on whether the floor is diamond or rectangle shaped. Some of the companies also make them in Cuben. Suggest you check the cottage sites, make a list, and then search on BPL for reviews or posts of the models, and contact the companies if necessary for details. This would not be such a task if BPL still did extensive comparison reviews of tents like it used to. Passing work on to the consumer seems to be the order of the day.
Issues with these tents include:
-The flat walls on the canopies that limit head room away from the central part of the tent, but you already have that in the Fly Creek, and BPL posters don't seem to have much problem with that.
-Less than a taut pitch on some models that are not well tailored. A flapping and ballooning tent will not be very good in the wind, and sagging can make already limited head room very unpleasant.
-Limited life on the Cuben models - depends on how much use they get, and how well the seams are constructed. If you can get it on these tents, a high hydrostatic head silnylon would make a better floor because the elasticity of the fabric resists abrasion well. Some like the stiffness of thicker Cuben for a floor, but IMO that is not a problem if a silnylon floor is pulled fully taut at all corners.
Reading posts and reviews should help to resolve the issues. One longtime member of BPL dislikes these tents because you have to install the trekking poles inside the tent, which can be tedious, at least until you get the 'hang' of it. But don't let a search for the perfect be the enemy of the good. Nimblewill Nomad has done many thousands of miles with tents of this design and speaks of them very favorably.
I should also note that tents of this design type are not fully double walled like the Fly Creek, but are more of a hybrid, depending on how the maker has tweaked the design. However, the posts I've read suggest that condensation in these tents is much less of a problem than on a single wall design. Perhaps some users will comment here on your thread.