I bit the bullet and pre-ordered my Vive yesterday. Now I just need to wait for it to arrive in early April.
In the mean time I will continue researching adding extended range to the Vive.
Developers Stress Level Zero are doing just that with the Vive Lighthouse. Evidently, the lighthouse is just a dumb laser and the sensor does all of the work, picking up the laser signal and using the information to calculate position and orientation. These guys at Stress Level Zero experiment around, pushing the limites of the Vive’s ranch. Here are some of their results as posted in the Road to VR article, Developer pushes Valve’s lighthouse tracking to its limits.
Evidently the lighthouse chain can be strung together. However, as expressed in this video, some hacking may be required:
This would be very cool to employ a volume of Lighthouse emitters to produce a 3 D Lazer Mocap studio.