I think, if candidate has 67 or 77, won't make difference. Because if candidate has 67 points (which is pass score), officer can not simply say no, because points are 67.
-In the forum, you can find posts, which suggests that guy(s) had 72 or 77 points, but his IELTS score was low, and officer asked him to re-submit IELTS score to get qualify, So having 5 or 10 points more than 67 won't change officer's mind-set.
if one guy has 67 points, and his application reached there on 10th of month,
another guy has 77 points but his application reached there on 20th of month;
and limit is reached and they need to pick one guy, are you suggesting that they pick will second guy? - I don't believe in that, because that's cheating with guy whose application reached on 10th, and he has 67 (pass score).
There is no end to wait for better/highly qualified candidate? Today if one application is reached there, then are you suggesting that they will wait for another application and put that guy on hold?
Even if they get another application which might be better candidate; then following your assumption, shouldn't them wait for another application, they might get even better candidate? till when they can follow this approach & wait?
So that there is not ambiguity and they need not to wait for better & better & better candidate; they have rules (like any profession organisation) to follow.
So I don't agree what your say....