So, in a nutshell, here is the price comparison:
Before 12/25/2017 - 5,000 Robux, and only works with Nexus Plane System
After 12/25/2017 - FREE!, and works with any plane system
A limitation I had before is with the collision groups. I originally had it put all the planes in a collision system, thus the restriction. However, I realized I can make it ignore everything and assign characters to their own group (possible incompatibility here, listed in model description).
Merry Christmas my dudes.