The Iveco Massif is not actually as exciting as it sounds. It is based on a spanish Santana PS-10:
File:Santana ps-10 pu front offroad.jpg - Wikipedia, the free encyclopedia
The Santana PS-10 is built by a company, who used to build Land Rover Defender under license. Santana PS-10 was based on the Defender. Which has a very crap reliability.
The engine on the Massif is though probably nice, 3.0 diesel, it's taken from an Iveco delivery truck, so should be solid, durable, reliable, even though not very powerful. But I'd still rather have the Mercedes diesel, which is currently in my Commander.
So, in my opinion the Massif doesn't have anything what the Jeep couldn't make themselves. A british design, redesigned by the spanish, redesigned by the italians. The foundations could be stronger, if you ask me. A pair of shoes with that history would be undoubtedly fantastic, but a car? I'd rather pass.
All Jeep needs, is to make the JK a bit more aggressive. It has all the basics covered already (at least the Rubi). On the side, finetune the Commander a bit and keep it in production.
The only thing missing from the Jeep lineup, would be a really small one, which apparently is coming as a joint effort with Fiat.
So it all looks good to me, no worries!