Real Farm Ops Draft

In the base game, a ground-engaging implement pulls back with the same fixed force whenever it's in the ground, no matter how fast you go or what the soil is like. A plough at 11 km/h pulls the same as at 7 km/h, and dry baked ground pulls the same as wet clay.
What this changes

Draft now follows three things:
Speed, using the ASABE D497 draft equations farm engineers use. A plough at 11 km/h pulls about 1.5× what it does at 7 km/h. A chisel rises more gently.
Soil water: dry, hard ground pulls hardest, friable ground is easiest, and wet, sticky ground climbs again as soil clings to the steel. Uses Mud System Physics' field wetness when it's installed.
Compaction: Visual Mud Tracks' topsoil hardness and subsoil compaction. A plough pan loads the plough and subsoiler, and a hard crust loads cultivators and discs.

Mowers, tedders and rakes get a small extra load in wet crop too, since wet grass really does drag harder through a cutterbar or rake.

Why it feels right
The mod only changes how hard the implement pulls back. Everything else happens in the game's physics: engine load, fuel use, wheel slip and sink, and wear all follow on their own. That means it works with Real Fuel Consumption, Mud System Physics and Advanced Damage System without patching any of them.