What I see/would like to see USMil adopting or developing techwise (based on my knowledge of tech and what I think is currently possible)

A doctrinal and technical focus on squad based and small-unit tactics, with multiple levels integrating to allow individual squads to work together seamlessly alongside a greater network of air support, intel crews, and the like. 

Standard loadout for a soldier would be a 16-inch rifle (likely M4 variant) with lightweight rail (keymod?) and a low/no-power optic (ACOG/similar) with a focus on durability, reliability, and being light weight. Not much is changing here from what we already have. I don’t expect to see caseless ammo or anything (though maybe seeing bi-metal/nickel steel brass to cut weight without losing heat sinking is a thing, since a company has already started producing those. Problem is price, since it’s not likely USMil is policing their brass any time soon).

Optic would be able to connect to laser rangefinder (IR/Green switchable) and at discretion, (likely tactile buttonpress) adjust the elevation based on the rangefinder automatically. You’d need to phase or encode the rangefinder signals to prevent cross-talk from other squadmates, but this is relatively trivial to do form a technical standpoint. Optic would provide visual indication of range-detection mode and indication of actual range. 

Possibly second tactile button (or double-tap of button) would allow soldier to mark location of interest/target. Rangefinder would take the distance reading and a compass heading, and feed that plus GPS location to commander as a point on a map. 

I’d expect to see some method of hard-wiring a rifle’s electronics to a soldier (using a new/retrofitted QD mount that has a data bus) for either power or data transfer; and hot-swappable, standard-sized batteries (15v Li-Po with standard dimensions and ability to replace with one gloved hand but also handle impact without coming loose).

Large UAV drones being used to detect and relay movement of people/vehicles semi-autonomously (using Computer Vision technology) for later discrimination from technicians who can mark targets, points of interest, etc.

Small size UAV drones capable of autonomously navigating at a given height in 3-space. Basically, they detect walls and floors and ceilings and fly around/over/under/through them so they’re easier to control by soldiers. Gold standard is that they can be reliably controlled through complex rooms and buildings with one hand while feeding remote vision with minimal latency loss. 

Anyone got ideas or opinions? I’m just spitballing.