More variable wind in relation to speed and direction.. It's too steady at present. You can take all the time in the world setting up a shot and the wind hasn't changed much if at all.
Ability for designers to set the physics of every terrain type. Be able to override these in solo or practice mode with everything adjustable via sliders.
More subtle brush shapes and sizes in CF. Too often in close up it's a square shape and too big.
Shape shots by moving/adjusting feet, ball position, hand position.
Create a assets sharing depository.
On the green have a laterally moving headlamp beam (narrow at the ball, widening to just past the hole) in which the grid will display. Can only use it once per putt.
Local area out of bounds positioned inside any hole perimeter in addition to the global OB around the course.
Better trees than Speedtree trees.
A more detailed overhead graphic. Some hazards are not easy to pick out at present.
Moveable 3 click meter.
Colour editable text on the HUD.
Copy/paste/change size of any shape and re-assign it to something else e.g. copy fairway, enlarge it proportionately or shrink it proportionately to suit, drop it anywhere and re-assign it to light rough, rough, heavy rough, waste or whatever.