As I wrote before the very intrinsic qualities of the Bv206 undermine the efforts to greatly increase the protection against IEDs and mines. It was designed to provide unrivaled mobility in the most difficult terrain (swamps, snowclad slopes and so on). I like to refer to it as chamois on stamina. The Bronco was the logical consequence, as you simply need a very strong chassis to carry a heavy cell designed with IEDs in mind to provide very high levels of protection. If the Bronco was constructed in such a way than it could be magnitudes safer than the Bv206.