The latest news from Australia and the UK gives interesting news. While our MRAPs have on average gotten heavier (with the M-ATV being the lone exception) our allies are looking at lighter offerings.
From the UK, we have the example of Force Protection UK's Ocelot Light Protected Patrol Vehicle. This truck will operate in the same manner as our future JLTV (perhaps in a more tactical role with no provision for the utility variants).
In Australia we just got word that their new Hawkei Light Protected Vehicle has made it to the second round in their selection process.
What's obvious is that the JLTV as its currently designed (by all competitors) is just too heavy. Don't get me wrong, I have nothing against highly protected vehicles. The issue becomes one of fewer returns with every ton increase in weight. MRAPs are notorious for poor ride and handling qualities (bad for troop effectiveness once they reach the objective) and for their inability to navigate confined areas of roadways (mostly tight mountain passes). The number of injured and killed by accidents is probably one of the more under reported consequences of the war against IEDs.
All this leads to the Marine Corps decision to pursue an uparmored Humvee, instead of the JLTV. The more I look at this issue the better I like the Granite Tactical solution.