PGLS

It would be better if white OB stakes were more visible - eg on first hole, playing Hazard, where tee shots need to find the rough, for example, to score more points, I did a "fly past" of the right rough and saw no OB stakes - I hit right and ended up with a surprise OB - same on 5th hole left - fly past showed no OB stakes so I hit left and got an OB! Is there another way to identify OB stakes/boundaries?

I gotta agree bud.
Have done the same myself.
Would be helpful if designers outlined OOB on overhead map.

Unfortunately there is not a reasonable way to outline the OB on the overhead map. That wasn't built into Course Forge. It would be near the top of my list for PG2/Course Forge 2 though!

On Ironwood I made the white stakes bigger, but then someone complained that they didn't look real. LOL, sometimes you just can't win.

Just think, the famous Mike Jones was a designer for Microsoft's Links...which had an overhead that was:

1. Expandable...you could literally make it full screen.
2. Had cameras that you could move - no more branches blocking the green.
3. Had a toggle switch to show the outline of the entire hole or OB only, whichever the player preferred.
4. Allowed a click anywhere on the entire tee to hole and see what the surface was; fw, rough, deep rough, etc.

You'd think Mr. Cheap A** would have put those things in PG.

On the other hand Links did not have a full 3D environment, which I think makes a difference. The overhead map in PG is not a separate window that can be edited in a Paint application by the designer. It is just a peak window updated within the area of the hole we are actually playing.
I dont remember exactly how it was in Links, but in JN6 a simple overhead map was created by the game. This map could then be edited in a 2d Paint program. I outlined the OOB area in white and sometimes used to type in OOB in that area of the overhead map to make it more obvious.

Of course the graphics are far better in PG, in comparison to Links which is still on a 1995 engine. Its the reason I quit playing Links after 27 years. The features of the game are far far far less. Many of the very basics are missing.
1. No female avatar
2. Many drops are way outside USGA rules.
3. Cannot see swing meter until you hit continue. If you could, you could analyze the effect of shot misses and LEARN from them.
4. Wind is not finished.
5. You can't land the highest shot you can make with a club without it bouncing 10-20 YARDS beyond the point of impact on a "normal", hahahaha, green. Many many many designers, and tournament setters have made it even more difficult because you can't compensate by trying to hit way short and let that goofy bounce take you to the pin, because there is either a 4 foot hill in front, or a sand bunker that you must go over, or the conditions are soft, normal, and then just forgeddaboudit.

I was not talking about the graphics, but the differences of the hole maps. As a reply to the original question.

I use F3 to go to the end of my shot distance and then press F5 and have a look around they are easy to find then.