Something else which seems to be on the rise is the move away from MBTs. Canada is already announced the mothballing of all of its tanks in favour of the Striker, the US is, from what I gather, about to/in the process of forming an experimental brigade or two with the Striker forming the primary AFV, and I've also heard the UK is taking a long, hard look at the Striker concept. We very well might see the disappearance of the tank as a major weapons system by the dawn of a new Twilight War.
ABMs are great, but along with advances in ABM tech, I think it's also plausible that nuclear delivery systems will increase in quality as well, possibly even to the point that battlefield weapons become larger, longer ranged, and have greater accuracy, so that the "old style" missiles in silos are a quaint idea that's kept alive more through nostalgia than anything else. Keep in mind that not many nukes have to fall to cause a breakdown in society, especially if enough high-powered EMPs are generated. Presumably, the society of 2033 will be even more vulnerable to a sudden total collapse of the information backbone than we are today.
ABMs are great, but along with advances in ABM tech, I think it's also plausible that nuclear delivery systems will increase in quality as well, possibly even to the point that battlefield weapons become larger, longer ranged, and have greater accuracy, so that the "old style" missiles in silos are a quaint idea that's kept alive more through nostalgia than anything else. Keep in mind that not many nukes have to fall to cause a breakdown in society, especially if enough high-powered EMPs are generated. Presumably, the society of 2033 will be even more vulnerable to a sudden total collapse of the information backbone than we are today.