I hope the designers of JLTV keep in mind that we tried to turn the HMMWV into a light armored car and make appropriate allowances.
Good question - and yes they have. It’s a new vehicle that’s armored by design, based off of the MATV MRAP, so yes it will have a more powerful engine and transmission. I’ve seen HMMWVs with commo shelters or those MI secret squirrel shelters blow out a lot of transmissions going up hills, since the vehicle wasn’t even designed for the armor weight, much less the weight of the shelter.