For me Elite Status is
VERY important:
#1-#10
UNLIMITED FREE UPGRADES: As a CO Platinum, I've gotten used to always being upgraded (no points, miles, dollars etc needed) on domestic flights. (Overseas is another matter

)
#11- Treatment by airline- I always seem to get better treatment as soon as they see my elite level, whether it is flight changes, seat assignments or just a smile

.
#12-Preboarding
As for the rest, yes I agree the extra miles, points etc are great--but not as important to me.
In fact, I've gotten so used to being an elite on CO, I really really hate it when I am forced to fly another carrier as only a mere passenger!