@Joscelin, except that I would be shooting the synths specifically to be one continuous experience - essentially making sure that each spin synth is a full spin and each walk, wall, or pano synth is a complete walk, wall, or pano but shooting them specifically to link together as I'm accustomed to doing with original photosynths.
In other words I'm looking for a way to transcend the 200 photo per new synth limit while still respecting that each new synth ought to be as complete an experience in and of itself as possible (possible exceptions where a walk or wall is simply too long to fit in a single new synth).
When it snowed in my town I shot a wall on each side of my street as well as a parallax pano at each end.
The 2 walls were both too long to fit into a single wall and thus became four synths, so it became six synths instead of four.
There's also a spin of my house, which makes the set rise to seven.