So what can be built that accommodates the 4 "must have" bullet points in my last post?
The mind boggles! It's a wide open space! I won't even try to second guess where LR might go with that.
If it involves borrowing engineering and designs from other existing new platforms - I don't see any issue with that.
Just focusing on one aspect, let's say suspension: I reckon that whatever the new defender has be it air, coil, leaf, torsion bar, or something entirely other - what ever it is will be executed with a high degree of awesome. Because they have to. And this principle will be across the board. I reckon.
So whether the new defender is separate chassis or monocoque (or a hybrid), whether it has coils or air, whether it has solid axles or independant susp. - I reckon it's going to have significant "wow factor". Just like the way the other two pillars have been executed.

