Allan,
What are your plans with the physx implementation project?
Free release of the code?
Paid release of the code?
Not sure of the particulars of the physx EULA, but this would be a great addition to the engine.
I ask because this has re-invigorated my interest in the 3impact engine, specifically my project involving dynamically simulated off road vehicles

This project would be valuable for me for dynamic damage & complex suspension systems etc. (working with nothing but spheres is a pain in the ***)
I would hope something of this nature would help rebuild the 3impact crowd, great engine IMO but it's missing functionality like this.
Thanks for the great work (especially the lego Technic gears test), I've been following this since the beginning.
All the best!