MM,
I am guessing that is a recent reno in AUS, the pig's ear or ice plant for our Northern mates, has gone too far in the 1st and 3rd images, the fact that it spreads and grows so quickly automatically has a unkempt look as opposed to 'wild'.
I don't mind the ice plant, but it must be a maintenance nightmare, recently playing Spyglass where I was told that they have recently spent a lot of money and man hours removing the ice plant from the sandy seaside holes.
So, what do I think of the 3 bunkers:
1 & 3 I do not like, it looks like the 'plague' or something from a sci fi movie spreading thru the bunkers - I would not be happy if that was my course.
2 - I am ok with the tufted grasses in a bunker, I play at a course with "sandy wasteland" - so don't mind grasses in the bunker, but would prefer it not in there, or it is not classified as a hazard but rather wasteland.
bm